308628896720 has 40 divisors (see below), whose sum is σ = 719406890280. Its totient is φ = 123134190080.

The previous prime is 308628896713. The next prime is 308628896731. The reversal of 308628896720 is 27698826803.

It can be written as a sum of positive squares in 4 ways, for example, as 261921856 + 308366974864 = 16184^2 + 555308^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 308628896720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4927571 + ... + 4989810.

It is an arithmetic number, because the mean of its divisors is an integer number (17985172257).

Almost surely, 2^308628896720 is an apocalyptic number.

It is an amenable number.

308628896720 is an abundant number, since it is smaller than the sum of its proper divisors (410777993560).

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

308628896720 is a wasteful number, since it uses less digits than its factorization.

308628896720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9917783 (or 9917777 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 308628896720 in words is "three hundred eight billion, six hundred twenty-eight million, eight hundred ninety-six thousand, seven hundred twenty".