308772828 has 72 divisors (see below), whose sum is σ = 960636768. Its totient is φ = 81433728.

The previous prime is 308772811. The next prime is 308772847. The reversal of 308772828 is 828277803.

It is a super-2 number, since 2×308772828² = 190681318622235168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43851 + ... + 50402.

Almost surely, 2^308772828 is an apocalyptic number.

It is an amenable number.

308772828 is an abundant number, since it is smaller than the sum of its proper divisors (651863940).

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

308772828 is a wasteful number, since it uses less digits than its factorization.

308772828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94283 (or 94278 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 308772828 is about 17571.9329614018. The cubic root of 308772828 is about 675.8957129368.

It can be divided in two parts, 3087 and 72828, that multiplied together give a square (224820036 = 14994²).

The spelling of 308772828 in words is "three hundred eight million, seven hundred seventy-two thousand, eight hundred twenty-eight".