28315608 has 32 divisors (see below), whose sum is σ = 74954160. Its totient is φ = 8883200.

The previous prime is 28315603. The next prime is 28315663. The reversal of 28315608 is 80651382.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315603) 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, 34293 + ... + 35108.

Almost surely, 2^28315608 is an apocalyptic number.

It is an amenable number.

28315608 is an abundant number, since it is smaller than the sum of its proper divisors (46638552).

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

28315608 is a wasteful number, since it uses less digits than its factorization.

28315608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69427 (or 69423 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28315608 is about 5321.2412085903. The cubic root of 28315608 is about 304.7955559041.

The spelling of 28315608 in words is "twenty-eight million, three hundred fifteen thousand, six hundred eight".