28970508 has 24 divisors (see below), whose sum is σ = 77254912. Its totient is φ = 8277264.

The previous prime is 28970467. The next prime is 28970531. The reversal of 28970508 is 80507982.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 172360 + ... + 172527.

Almost surely, 2^28970508 is an apocalyptic number.

28970508 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28970508 is an abundant number, since it is smaller than the sum of its proper divisors (48284404).

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

28970508 is a wasteful number, since it uses less digits than its factorization.

28970508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344901 (or 344899 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 28970508 is about 5382.4258471436. The cubic root of 28970508 is about 307.1274992347.

The spelling of 28970508 in words is "twenty-eight million, nine hundred seventy thousand, five hundred eight".