308987009956 has 27 divisors (see below), whose sum is σ = 574440918499. Its totient is φ = 145396757888.

The previous prime is 308987009951. The next prime is 308987009983. The reversal of 308987009956 is 659900789803.

It is a happy number.

The square root of 308987009956 is 555866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1867104100 + 307119905856 = 43210^2 + 554184^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (308987009951) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18891270 + ... + 18907618.

Almost surely, 2^308987009956 is an apocalyptic number.

308987009956 is the 555866-th square number.

It is an amenable number.

308987009956 is a deficient number, since it is larger than the sum of its proper divisors (265453908543).

308987009956 is an frugal number, since it uses more digits than its factorization.

308987009956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32736 (or 16368 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 64.

Multiplying 308987009956 by its sum of digits (64), we get a square (19775168637184 = 4446928²).

The spelling of 308987009956 in words is "three hundred eight billion, nine hundred eighty-seven million, nine thousand, nine hundred fifty-six".