28561692 has 12 divisors (see below), whose sum is σ = 66643976. Its totient is φ = 9520560.

The previous prime is 28561691. The next prime is 28561727. The reversal of 28561692 is 29616582.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28561692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28561691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190059 + ... + 1190082.

Almost surely, 2^28561692 is an apocalyptic number.

It is an amenable number.

28561692 is an abundant number, since it is smaller than the sum of its proper divisors (38082284).

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

28561692 is a wasteful number, since it uses less digits than its factorization.

28561692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380148 (or 2380146 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 28561692 is about 5344.3139877818. The cubic root of 28561692 is about 305.6759780890.

The spelling of 28561692 in words is "twenty-eight million, five hundred sixty-one thousand, six hundred ninety-two".