28481708 has 12 divisors (see below), whose sum is σ = 49948752. Its totient is φ = 14210640.

The previous prime is 28481707. The next prime is 28481737. The reversal of 28481708 is 80718482.

It is a happy number.

It is a super-2 number, since 2×28481708² = 1622415381194528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28481701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5363 + ... + 9258.

It is an arithmetic number, because the mean of its divisors is an integer number (4162396).

Almost surely, 2^28481708 is an apocalyptic number.

It is an amenable number.

28481708 is a deficient number, since it is larger than the sum of its proper divisors (21467044).

28481708 is a wasteful number, since it uses less digits than its factorization.

28481708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15112 (or 15110 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 28481708 is about 5336.8256482670. The cubic root of 28481708 is about 305.3903735636.

The spelling of 28481708 in words is "twenty-eight million, four hundred eighty-one thousand, seven hundred eight".