308981372 has 24 divisors (see below), whose sum is σ = 618674784. Its totient is φ = 132268032.

The previous prime is 308981369. The next prime is 308981377. The reversal of 308981372 is 273189803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308981377) 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, 20348 + ... + 32124.

It is an arithmetic number, because the mean of its divisors is an integer number (25778116).

Almost surely, 2^308981372 is an apocalyptic number.

It is an amenable number.

308981372 is an abundant number, since it is smaller than the sum of its proper divisors (309693412).

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

308981372 is a wasteful number, since it uses less digits than its factorization.

308981372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12725 (or 12723 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 308981372 is about 17577.8659683137. The cubic root of 308981372 is about 676.0478444948.

The spelling of 308981372 in words is "three hundred eight million, nine hundred eighty-one thousand, three hundred seventy-two".