28408974 has 32 divisors (see below), whose sum is σ = 62277120. Its totient is φ = 8568000.

The previous prime is 28408973. The next prime is 28408999. The reversal of 28408974 is 47980482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28408973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14874 + ... + 16674.

It is an arithmetic number, because the mean of its divisors is an integer number (1946160).

Almost surely, 2^28408974 is an apocalyptic number.

28408974 is an abundant number, since it is smaller than the sum of its proper divisors (33868146).

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

28408974 is a wasteful number, since it uses less digits than its factorization.

28408974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28408974 is about 5330.0069418341. The cubic root of 28408974 is about 305.1301925592.

The spelling of 28408974 in words is "twenty-eight million, four hundred eight thousand, nine hundred seventy-four".