381622608 has 30 divisors (see below), whose sum is σ = 1068013674. Its totient is φ = 127207488.

The previous prime is 381622597. The next prime is 381622627. The reversal of 381622608 is 806226183.

381622608 is a `hidden beast` number, since 38 + 16 + 2 + 2 + 608 = 666.

It can be written as a sum of positive squares in only one way, i.e., 312865344 + 68757264 = 17688^2 + 8292^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1324935 + ... + 1325222.

Almost surely, 2^381622608 is an apocalyptic number.

It is an amenable number.

381622608 is an abundant number, since it is smaller than the sum of its proper divisors (686391066).

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

381622608 is a wasteful number, since it uses less digits than its factorization.

381622608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650171 (or 2650162 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 381622608 is about 19535.1633727492. The cubic root of 381622608 is about 725.3451281092.

The spelling of 381622608 in words is "three hundred eighty-one million, six hundred twenty-two thousand, six hundred eight".