381208572 has 48 divisors (see below), whose sum is σ = 990249120. Its totient is φ = 126821376.

The previous prime is 381208547. The next prime is 381208573. The reversal of 381208572 is 275802183.

381208572 is a `hidden beast` number, since 3 + 81 + 2 + 0 + 8 + 572 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381208573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56988 + ... + 63324.

It is an arithmetic number, because the mean of its divisors is an integer number (20630190).

Almost surely, 2^381208572 is an apocalyptic number.

It is an amenable number.

381208572 is an abundant number, since it is smaller than the sum of its proper divisors (609040548).

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

381208572 is a wasteful number, since it uses less digits than its factorization.

381208572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907 (or 6899 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 381208572 is about 19524.5632985734. The cubic root of 381208572 is about 725.0827155725.

The spelling of 381208572 in words is "three hundred eighty-one million, two hundred eight thousand, five hundred seventy-two".