381238272 has 88 divisors (see below), whose sum is σ = 1129125200. Its totient is φ = 127070208.

The previous prime is 381238261. The next prime is 381238289. The reversal of 381238272 is 272832183.

It is a happy number.

381238272 is a `hidden beast` number, since 381 + 2 + 3 + 8 + 272 = 666.

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 7 ways as a sum of consecutive naturals, for example, 20754 + ... + 34542.

Almost surely, 2^381238272 is an apocalyptic number.

381238272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381238272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564562600).

381238272 is an abundant number, since it is smaller than the sum of its proper divisors (747886928).

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

381238272 is a wasteful number, since it uses less digits than its factorization.

381238272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13818 (or 13794 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 381238272 is about 19525.3238641514. The cubic root of 381238272 is about 725.1015455071.

The spelling of 381238272 in words is "three hundred eighty-one million, two hundred thirty-eight thousand, two hundred seventy-two".