381669400 has 48 divisors (see below), whose sum is σ = 1014153840. Its totient is φ = 130857600.

The previous prime is 381669389. The next prime is 381669433. The reversal of 381669400 is 4966183.

It is a self number, because there is not a number n which added to its sum of digits gives 381669400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134911 + ... + 137710.

It is an arithmetic number, because the mean of its divisors is an integer number (21128205).

Almost surely, 2^381669400 is an apocalyptic number.

It is an amenable number.

381669400 is an abundant number, since it is smaller than the sum of its proper divisors (632484440).

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

381669400 is a wasteful number, since it uses less digits than its factorization.

381669400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272644 (or 272635 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 381669400 is about 19536.3609712761. The cubic root of 381669400 is about 725.3747725463.

The spelling of 381669400 in words is "three hundred eighty-one million, six hundred sixty-nine thousand, four hundred".