28908424 has 32 divisors (see below), whose sum is σ = 59544000. Its totient is φ = 13096512.

The previous prime is 28908421. The next prime is 28908469. The reversal of 28908424 is 42480982.

It is not an unprimeable number, because it can be changed into a prime (28908421) 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, 639 + ... + 7630.

It is an arithmetic number, because the mean of its divisors is an integer number (1860750).

Almost surely, 2^28908424 is an apocalyptic number.

It is an amenable number.

28908424 is an abundant number, since it is smaller than the sum of its proper divisors (30635576).

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

28908424 is a wasteful number, since it uses less digits than its factorization.

28908424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8317 (or 8313 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 28908424 is about 5376.6554659937. The cubic root of 28908424 is about 306.9079502064.

The spelling of 28908424 in words is "twenty-eight million, nine hundred eight thousand, four hundred twenty-four".