28902616 has 16 divisors (see below), whose sum is σ = 54590040. Its totient is φ = 14345280.

The previous prime is 28902611. The next prime is 28902617. The reversal of 28902616 is 61620982.

It is a happy number.

It is a super-2 number, since 2×28902616² = 1670722423286912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28902611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12090 + ... + 14281.

Almost surely, 2^28902616 is an apocalyptic number.

It is an amenable number.

28902616 is a deficient number, since it is larger than the sum of its proper divisors (25687424).

28902616 is a wasteful number, since it uses less digits than its factorization.

28902616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26514 (or 26510 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 28902616 is about 5376.1153261440. The cubic root of 28902616 is about 306.8873951741.

The spelling of 28902616 in words is "twenty-eight million, nine hundred two thousand, six hundred sixteen".