381788472 has 64 divisors (see below), whose sum is σ = 1031940000. Its totient is φ = 117010944.

The previous prime is 381788453. The next prime is 381788483. The reversal of 381788472 is 274887183.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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, 81654 + ... + 86202.

Almost surely, 2^381788472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381788472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515970000).

381788472 is an abundant number, since it is smaller than the sum of its proper divisors (650151528).

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

381788472 is a wasteful number, since it uses less digits than its factorization.

381788472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840 (or 4836 counting only the distinct ones).

The product of its digits is 602112, while the sum is 48.

The square root of 381788472 is about 19539.4081793692. The cubic root of 381788472 is about 725.4501980712.

The spelling of 381788472 in words is "three hundred eighty-one million, seven hundred eighty-eight thousand, four hundred seventy-two".