381986252 has 12 divisors (see below), whose sum is σ = 676530456. Its totient is φ = 188691840.

The previous prime is 381986221. The next prime is 381986257. The reversal of 381986252 is 252689183.

It is not an unprimeable number, because it can be changed into a prime (381986257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574949 + ... + 575612.

It is an arithmetic number, because the mean of its divisors is an integer number (56377538).

Almost surely, 2^381986252 is an apocalyptic number.

It is an amenable number.

381986252 is a deficient number, since it is larger than the sum of its proper divisors (294544204).

381986252 is a wasteful number, since it uses less digits than its factorization.

381986252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150648 (or 1150646 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 381986252 is about 19544.4685780913. The cubic root of 381986252 is about 725.5754461094.

The spelling of 381986252 in words is "three hundred eighty-one million, nine hundred eighty-six thousand, two hundred fifty-two".