28012692 has 12 divisors (see below), whose sum is σ = 65362976. Its totient is φ = 9337560.

The previous prime is 28012681. The next prime is 28012693. The reversal of 28012692 is 29621082.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28012693) 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, 1167184 + ... + 1167207.

Almost surely, 2^28012692 is an apocalyptic number.

It is an amenable number.

28012692 is an abundant number, since it is smaller than the sum of its proper divisors (37350284).

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

28012692 is a wasteful number, since it uses less digits than its factorization.

28012692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334398 (or 2334396 counting only the distinct ones).

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

The square root of 28012692 is about 5292.7017675286. The cubic root of 28012692 is about 303.7047716702.

The spelling of 28012692 in words is "twenty-eight million, twelve thousand, six hundred ninety-two".