385890380 has 24 divisors (see below), whose sum is σ = 853021680. Its totient is φ = 146232000.

The previous prime is 385890377. The next prime is 385890391. The reversal of 385890380 is 83098583.

It is a super-2 number, since 2×385890380² = 297822770753088800, which contains 22 as substring.

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, 507371 + ... + 508130.

It is an arithmetic number, because the mean of its divisors is an integer number (35542570).

Almost surely, 2^385890380 is an apocalyptic number.

It is an amenable number.

385890380 is an abundant number, since it is smaller than the sum of its proper divisors (467131300).

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

385890380 is a wasteful number, since it uses less digits than its factorization.

385890380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015529 (or 1015527 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 385890380 is about 19644.0927507483. The cubic root of 385890380 is about 728.0390104081.

The spelling of 385890380 in words is "three hundred eighty-five million, eight hundred ninety thousand, three hundred eighty".