385172380 has 24 divisors (see below), whose sum is σ = 810085248. Its totient is φ = 153835968.

The previous prime is 385172369. The next prime is 385172387. The reversal of 385172380 is 83271583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385172387) 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, 684 + ... + 27763.

It is an arithmetic number, because the mean of its divisors is an integer number (33753552).

Almost surely, 2^385172380 is an apocalyptic number.

It is an amenable number.

385172380 is an abundant number, since it is smaller than the sum of its proper divisors (424912868).

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

385172380 is a wasteful number, since it uses less digits than its factorization.

385172380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29133 (or 29131 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 385172380 is about 19625.8090279102. The cubic root of 385172380 is about 727.5871925032.

The spelling of 385172380 in words is "three hundred eighty-five million, one hundred seventy-two thousand, three hundred eighty".