381373240 has 64 divisors (see below), whose sum is σ = 911736000. Its totient is φ = 143075328.

The previous prime is 381373231. The next prime is 381373241. The reversal of 381373240 is 42373183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381373241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236517 + ... + 238123.

It is an arithmetic number, because the mean of its divisors is an integer number (14245875).

Almost surely, 2^381373240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381373240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455868000).

381373240 is an abundant number, since it is smaller than the sum of its proper divisors (530362760).

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

381373240 is a wasteful number, since it uses less digits than its factorization.

381373240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 381373240 is about 19528.7797877901. The cubic root of 381373240 is about 725.1871035127.

The spelling of 381373240 in words is "three hundred eighty-one million, three hundred seventy-three thousand, two hundred forty".