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28930008 = 2331963443
BaseRepresentation
bin110111001011…
…0111111011000
32000102210111210
41232112333120
524401230013
62512023120
7500621022
oct156267730
960383453
1028930008
111536a5a8
129831aa0
135cbbc63
143bb1012
152816cc3
hex1b96fd8

28930008 has 32 divisors (see below), whose sum is σ = 76132800. Its totient is φ = 9135648.

The previous prime is 28930003. The next prime is 28930049. The reversal of 28930008 is 80003982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28930003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31266 + ... + 32177.

It is an arithmetic number, because the mean of its divisors is an integer number (2379150).

Almost surely, 228930008 is an apocalyptic number.

It is an amenable number.

28930008 is an abundant number, since it is smaller than the sum of its proper divisors (47202792).

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

28930008 is a wasteful number, since it uses less digits than its factorization.

28930008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63471 (or 63467 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28930008 is about 5378.6622872235. The cubic root of 28930008 is about 306.9843137978.

The spelling of 28930008 in words is "twenty-eight million, nine hundred thirty thousand, eight".

Divisors: 1 2 3 4 6 8 12 19 24 38 57 76 114 152 228 456 63443 126886 190329 253772 380658 507544 761316 1205417 1522632 2410834 3616251 4821668 7232502 9643336 14465004 28930008