28918746 has 12 divisors (see below), whose sum is σ = 62657322. Its totient is φ = 9639576.

The previous prime is 28918739. The next prime is 28918759. The reversal of 28918746 is 64781982.

It can be written as a sum of positive squares in only one way, i.e., 28037025 + 881721 = 5295^2 + 939^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 803281 + ... + 803316.

Almost surely, 2^28918746 is an apocalyptic number.

28918746 is an abundant number, since it is smaller than the sum of its proper divisors (33738576).

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

28918746 is a wasteful number, since it uses less digits than its factorization.

28918746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606605 (or 1606602 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 28918746 is about 5377.6152707311. The cubic root of 28918746 is about 306.9444738957.

The spelling of 28918746 in words is "twenty-eight million, nine hundred eighteen thousand, seven hundred forty-six".