381522630 has 32 divisors (see below), whose sum is σ = 937990368. Its totient is φ = 99257600.

The previous prime is 381522607. The next prime is 381522667. The reversal of 381522630 is 36225183.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153861 + ... + 156320.

It is an arithmetic number, because the mean of its divisors is an integer number (29312199).

Almost surely, 2^381522630 is an apocalyptic number.

381522630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381522630 is an abundant number, since it is smaller than the sum of its proper divisors (556467738).

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

381522630 is a wasteful number, since it uses less digits than its factorization.

381522630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310232.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 381522630 is about 19532.6042810476. The cubic root of 381522630 is about 725.2817802821.

The spelling of 381522630 in words is "three hundred eighty-one million, five hundred twenty-two thousand, six hundred thirty".