381875440 has 40 divisors (see below), whose sum is σ = 926467488. Its totient is φ = 146108160.

The previous prime is 381875419. The next prime is 381875449. The reversal of 381875440 is 44578183.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 381875393 and 381875402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381875449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101931 + ... + 105610.

Almost surely, 2^381875440 is an apocalyptic number.

It is an amenable number.

381875440 is an abundant number, since it is smaller than the sum of its proper divisors (544592048).

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

381875440 is a wasteful number, since it uses less digits than its factorization.

381875440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207577 (or 207571 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 381875440 is about 19541.6335038809. The cubic root of 381875440 is about 725.5052775786.

The spelling of 381875440 in words is "three hundred eighty-one million, eight hundred seventy-five thousand, four hundred forty".