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28954761 = 3114911787
BaseRepresentation
bin110111001110…
…1000010001001
32000111001110120
41232131002021
524403023021
62512333453
7501053133
oct156350211
960431416
1028954761
1115387160
129844289
135cca2c4
143bba053
15281e2c6
hex1b9d089

28954761 has 16 divisors (see below), whose sum is σ = 42225408. Its totient is φ = 17502800.

The previous prime is 28954753. The next prime is 28954763. The reversal of 28954761 is 16745982.

It is a cyclic number.

It is not a de Polignac number, because 28954761 - 23 = 28954753 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28954763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15310 + ... + 17096.

It is an arithmetic number, because the mean of its divisors is an integer number (2639088).

Almost surely, 228954761 is an apocalyptic number.

It is an amenable number.

28954761 is a deficient number, since it is larger than the sum of its proper divisors (13270647).

28954761 is a wasteful number, since it uses less digits than its factorization.

28954761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

The product of its digits is 120960, while the sum is 42.

The square root of 28954761 is about 5380.9628320590. The cubic root of 28954761 is about 307.0718424812.

The spelling of 28954761 in words is "twenty-eight million, nine hundred fifty-four thousand, seven hundred sixty-one".

Divisors: 1 3 11 33 491 1473 1787 5361 5401 16203 19657 58971 877417 2632251 9651587 28954761