381307926 has 32 divisors (see below), whose sum is σ = 815492448. Its totient is φ = 118438400.

The previous prime is 381307907. The next prime is 381307931. The reversal of 381307926 is 629703183.

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, 8205 + ... + 28808.

It is an arithmetic number, because the mean of its divisors is an integer number (25484139).

Almost surely, 2^381307926 is an apocalyptic number.

381307926 is an abundant number, since it is smaller than the sum of its proper divisors (434184522).

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

381307926 is a wasteful number, since it uses less digits than its factorization.

381307926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37136.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 381307926 is about 19527.1074662890. The cubic root of 381307926 is about 725.1457026228.

It can be divided in two parts, 38130 and 7926, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 381307926 in words is "three hundred eighty-one million, three hundred seven thousand, nine hundred twenty-six".