385212780 has 48 divisors (see below), whose sum is σ = 1198441440. Its totient is φ = 102723264.

The previous prime is 385212739. The next prime is 385212781. The reversal of 385212780 is 87212583.

385212780 is a `hidden beast` number, since 38 + 521 + 27 + 80 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (385212781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356139 + ... + 357218.

It is an arithmetic number, because the mean of its divisors is an integer number (24967530).

Almost surely, 2^385212780 is an apocalyptic number.

385212780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385212780 is an abundant number, since it is smaller than the sum of its proper divisors (813228660).

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

385212780 is a wasteful number, since it uses less digits than its factorization.

385212780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713375 (or 713367 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 385212780 is about 19626.8382578550. The cubic root of 385212780 is about 727.6126300271.

The spelling of 385212780 in words is "three hundred eighty-five million, two hundred twelve thousand, seven hundred eighty".