307216380 has 24 divisors (see below), whose sum is σ = 860206032. Its totient is φ = 81924352.

The previous prime is 307216331. The next prime is 307216397. The reversal of 307216380 is 83612703.

307216380 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 2560077 + ... + 2560196.

It is an arithmetic number, because the mean of its divisors is an integer number (35841918).

Almost surely, 2^307216380 is an apocalyptic number.

307216380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

307216380 is an abundant number, since it is smaller than the sum of its proper divisors (552989652).

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

307216380 is a wasteful number, since it uses less digits than its factorization.

307216380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120285 (or 5120283 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 307216380 is about 17527.5891097435. The cubic root of 307216380 is about 674.7581245865.

The spelling of 307216380 in words is "three hundred seven million, two hundred sixteen thousand, three hundred eighty".