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28573707954 = 231119151150901
BaseRepresentation
bin11010100111001000…
…000010111010110010
32201202100110202111210
4122213020002322302
5432004332123304
621043201420550
72031040340001
oct324710027262
981670422453
1028573707954
1111133127780
12565533a756
132904a3c2cc
141550c50c38
15b237ddc89
hex6a7202eb2

28573707954 has 64 divisors (see below), whose sum is σ = 66058859520. Its totient is φ = 8148600000.

The previous prime is 28573707941. The next prime is 28573707959. The reversal of 28573707954 is 45970737582.

It is a super-2 number, since 2×285737079542 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28573707894 and 28573707903.

It is not an unprimeable number, because it can be changed into a prime (28573707959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113904 + ... + 264804.

It is an arithmetic number, because the mean of its divisors is an integer number (1032169680).

Almost surely, 228573707954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28573707954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33029429760).

28573707954 is an abundant number, since it is smaller than the sum of its proper divisors (37485151566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28573707954 is a wasteful number, since it uses less digits than its factorization.

28573707954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151087.

The product of its (nonzero) digits is 14817600, while the sum is 57.

The spelling of 28573707954 in words is "twenty-eight billion, five hundred seventy-three million, seven hundred seven thousand, nine hundred fifty-four".

Divisors: 1 2 3 6 11 19 22 33 38 57 66 114 151 209 302 418 453 627 906 1254 1661 2869 3322 4983 5738 8607 9966 17214 31559 63118 94677 150901 189354 301802 452703 905406 1659911 2867119 3319822 4979733 5734238 8601357 9959466 17202714 22786051 31538309 45572102 63076618 68358153 94614927 136716306 189229854 250646561 432934969 501293122 751939683 865869938 1298804907 1503879366 2597609814 4762284659 9524569318 14286853977 28573707954