385902240 has 48 divisors (see below), whose sum is σ = 1215593568. Its totient is φ = 102907136.

The previous prime is 385902239. The next prime is 385902247. The reversal of 385902240 is 42209583.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (385902247) 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, 401502 + ... + 402461.

It is an arithmetic number, because the mean of its divisors is an integer number (25324866).

Almost surely, 2^385902240 is an apocalyptic number.

385902240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385902240 is an abundant number, since it is smaller than the sum of its proper divisors (829691328).

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

385902240 is a wasteful number, since it uses less digits than its factorization.

385902240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803981 (or 803973 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 385902240 is about 19644.3946203491. The cubic root of 385902240 is about 728.0464688770.

The spelling of 385902240 in words is "three hundred eighty-five million, nine hundred two thousand, two hundred forty".