28801974 has 16 divisors (see below), whose sum is σ = 57658608. Its totient is φ = 9591552.

The previous prime is 28801973. The next prime is 28801979. The reversal of 28801974 is 47910882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28801973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8494 + ... + 11390.

It is an arithmetic number, because the mean of its divisors is an integer number (3603663).

Almost surely, 2^28801974 is an apocalyptic number.

28801974 is an abundant number, since it is smaller than the sum of its proper divisors (28856634).

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

28801974 is a wasteful number, since it uses less digits than its factorization.

28801974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4559.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 28801974 is about 5366.7470594393. The cubic root of 28801974 is about 306.5307760142.

The spelling of 28801974 in words is "twenty-eight million, eight hundred one thousand, nine hundred seventy-four".