381107720 has 32 divisors (see below), whose sum is σ = 979992000. Its totient is φ = 130665408.

The previous prime is 381107653. The next prime is 381107747. The reversal of 381107720 is 27701183.

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, 680270 + ... + 680829.

It is an arithmetic number, because the mean of its divisors is an integer number (30624750).

Almost surely, 2^381107720 is an apocalyptic number.

It is an amenable number.

381107720 is an abundant number, since it is smaller than the sum of its proper divisors (598884280).

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

381107720 is a wasteful number, since it uses less digits than its factorization.

381107720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361117 (or 1361113 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 381107720 is about 19521.9804323229. The cubic root of 381107720 is about 725.0187676473.

The spelling of 381107720 in words is "three hundred eighty-one million, one hundred seven thousand, seven hundred twenty".