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28265052 = 22310123321
BaseRepresentation
bin110101111010…
…0101001011100
31222012000100210
41223310221130
524213440202
62445452420
7462151254
oct153645134
958160323
1028265052
1114a55a52
129571110
135b183aa
143a7a964
152734c6c
hex1af4a5c

28265052 has 24 divisors (see below), whose sum is σ = 66607632. Its totient is φ = 9328000.

The previous prime is 28265023. The next prime is 28265057. The reversal of 28265052 is 25056282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28265057) 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, 10449 + ... + 12872.

It is an arithmetic number, because the mean of its divisors is an integer number (2775318).

Almost surely, 228265052 is an apocalyptic number.

It is an amenable number.

28265052 is an abundant number, since it is smaller than the sum of its proper divisors (38342580).

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

28265052 is a wasteful number, since it uses less digits than its factorization.

28265052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23429 (or 23427 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 28265052 is about 5316.4886908560. The cubic root of 28265052 is about 304.6140491296.

The spelling of 28265052 in words is "twenty-eight million, two hundred sixty-five thousand, fifty-two".

Divisors: 1 2 3 4 6 12 101 202 303 404 606 1212 23321 46642 69963 93284 139926 279852 2355421 4710842 7066263 9421684 14132526 28265052