385089720 has 64 divisors (see below), whose sum is σ = 1216080000. Its totient is φ = 97285248.

The previous prime is 385089707. The next prime is 385089737. The reversal of 385089720 is 27980583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82170 + ... + 86729.

It is an arithmetic number, because the mean of its divisors is an integer number (19001250).

Almost surely, 2^385089720 is an apocalyptic number.

385089720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385089720 is an abundant number, since it is smaller than the sum of its proper divisors (830990280).

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

385089720 is a wasteful number, since it uses less digits than its factorization.

385089720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168932 (or 168928 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 385089720 is about 19623.7030144670. The cubic root of 385089720 is about 727.5351407784.

The spelling of 385089720 in words is "three hundred eighty-five million, eighty-nine thousand, seven hundred twenty".