28697036 has 12 divisors (see below), whose sum is σ = 50708112. Its totient is φ = 14209008.

The previous prime is 28697033. The next prime is 28697051. The reversal of 28697036 is 63079682.

It is a junction number, because it is equal to n+sod(n) for n = 28696984 and 28697002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28697033) 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, 34415 + ... + 35238.

It is an arithmetic number, because the mean of its divisors is an integer number (4225676).

Almost surely, 2^28697036 is an apocalyptic number.

It is an amenable number.

28697036 is a deficient number, since it is larger than the sum of its proper divisors (22011076).

28697036 is a wasteful number, since it uses less digits than its factorization.

28697036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69760 (or 69758 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 28697036 is about 5356.9614521667. The cubic root of 28697036 is about 306.1580484182.

The spelling of 28697036 in words is "twenty-eight million, six hundred ninety-seven thousand, thirty-six".