375478644 has 12 divisors (see below), whose sum is σ = 876116864. Its totient is φ = 125159544.

The previous prime is 375478633. The next prime is 375478661. The reversal of 375478644 is 446874573.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 375478593 and 375478602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15644932 + ... + 15644955.

Almost surely, 2^375478644 is an apocalyptic number.

It is an amenable number.

375478644 is an abundant number, since it is smaller than the sum of its proper divisors (500638220).

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

375478644 is a wasteful number, since it uses less digits than its factorization.

375478644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31289894 (or 31289892 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 48.

The square root of 375478644 is about 19377.2713249312. The cubic root of 375478644 is about 721.4314654227.

The spelling of 375478644 in words is "three hundred seventy-five million, four hundred seventy-eight thousand, six hundred forty-four".