385507272 has 32 divisors (see below), whose sum is σ = 967214880. Its totient is φ = 128042880.

The previous prime is 385507259. The next prime is 385507279. The reversal of 385507272 is 272705583.

It is a self number, because there is not a number n which added to its sum of digits gives 385507272.

It is not an unprimeable number, because it can be changed into a prime (385507279) 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, 21838 + ... + 35325.

It is an arithmetic number, because the mean of its divisors is an integer number (30225465).

Almost surely, 2^385507272 is an apocalyptic number.

It is an amenable number.

385507272 is an abundant number, since it is smaller than the sum of its proper divisors (581707608).

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

385507272 is a wasteful number, since it uses less digits than its factorization.

385507272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57453 (or 57449 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 385507272 is about 19634.3391027047. The cubic root of 385507272 is about 727.7980007528.

The spelling of 385507272 in words is "three hundred eighty-five million, five hundred seven thousand, two hundred seventy-two".