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28264692 = 22310722013
BaseRepresentation
bin110101111010…
…0100011110100
31222011222212110
41223310203310
524213432232
62445451020
7462150231
oct153644364
958158773
1028264692
1114a55755
129570a70
135b18191
143a7a788
152734acc
hex1af48f4

28264692 has 24 divisors (see below), whose sum is σ = 66570336. Its totient is φ = 9333088.

The previous prime is 28264679. The next prime is 28264697. The reversal of 28264692 is 29646282.

It is a self number, because there is not a number n which added to its sum of digits gives 28264692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28264697) 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, 9723 + ... + 12290.

It is an arithmetic number, because the mean of its divisors is an integer number (2773764).

Almost surely, 228264692 is an apocalyptic number.

It is an amenable number.

28264692 is an abundant number, since it is smaller than the sum of its proper divisors (38305644).

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

28264692 is a wasteful number, since it uses less digits than its factorization.

28264692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22127 (or 22125 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 28264692 is about 5316.4548338155. The cubic root of 28264692 is about 304.6127558774.

The spelling of 28264692 in words is "twenty-eight million, two hundred sixty-four thousand, six hundred ninety-two".

Divisors: 1 2 3 4 6 12 107 214 321 428 642 1284 22013 44026 66039 88052 132078 264156 2355391 4710782 7066173 9421564 14132346 28264692