381207276 has 48 divisors (see below), whose sum is σ = 989368800. Its totient is φ = 126933696.

The previous prime is 381207251. The next prime is 381207283. The reversal of 381207276 is 672702183.

381207276 is a `hidden beast` number, since 381 + 2 + 0 + 7 + 276 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 381207276.

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, 192226 + ... + 194198.

It is an arithmetic number, because the mean of its divisors is an integer number (20611850).

Almost surely, 2^381207276 is an apocalyptic number.

381207276 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381207276 is an abundant number, since it is smaller than the sum of its proper divisors (608161524).

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

381207276 is a wasteful number, since it uses less digits than its factorization.

381207276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 381207276 is about 19524.5301095827. The cubic root of 381207276 is about 725.0818938804.

The spelling of 381207276 in words is "three hundred eighty-one million, two hundred seven thousand, two hundred seventy-six".