28207692 has 36 divisors (see below), whose sum is σ = 75498696. Its totient is φ = 8849280.

The previous prime is 28207651. The next prime is 28207693. The reversal of 28207692 is 29670282.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28207693) 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 11 ways as a sum of consecutive naturals, for example, 22434 + ... + 23657.

It is an arithmetic number, because the mean of its divisors is an integer number (2097186).

Almost surely, 2^28207692 is an apocalyptic number.

It is an amenable number.

28207692 is an abundant number, since it is smaller than the sum of its proper divisors (47291004).

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

28207692 is a wasteful number, since it uses less digits than its factorization.

28207692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46118 (or 46113 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28207692 is about 5311.0914132596. The cubic root of 28207692 is about 304.4078522727.

The spelling of 28207692 in words is "twenty-eight million, two hundred seven thousand, six hundred ninety-two".