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30451052144 = 248291229549
BaseRepresentation
bin11100010111000001…
…100010111001110000
32220121012000201121002
4130113001202321300
5444330432132034
621553343421132
72125414446452
oct342701427160
986535021532
1030451052144
1111a069091a7
125a99bb47a8
132b4396c966
14168c2dc2d2
15bd3523e7e
hex717062e70

30451052144 has 20 divisors (see below), whose sum is σ = 59006286600. Its totient is φ = 15223623360.

The previous prime is 30451052143. The next prime is 30451052167. The reversal of 30451052144 is 44125015403.

It is a super-3 number, since 3×304510521443 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30451052141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17882 + ... + 247430.

It is an arithmetic number, because the mean of its divisors is an integer number (2950314330).

Almost surely, 230451052144 is an apocalyptic number.

It is an amenable number.

30451052144 is a deficient number, since it is larger than the sum of its proper divisors (28555234456).

30451052144 is a wasteful number, since it uses less digits than its factorization.

30451052144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237848 (or 237842 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 30451052144 its reverse (44125015403), we get a palindrome (74576067547).

The spelling of 30451052144 in words is "thirty billion, four hundred fifty-one million, fifty-two thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 8291 16582 33164 66328 132656 229549 459098 918196 1836392 3672784 1903190759 3806381518 7612763036 15225526072 30451052144