381786288 has 40 divisors (see below), whose sum is σ = 1062150768. Its totient is φ = 117472512.

The previous prime is 381786283. The next prime is 381786299. The reversal of 381786288 is 882687183.

It is a self number, because there is not a number n which added to its sum of digits gives 381786288.

It is not an unprimeable number, because it can be changed into a prime (381786283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305295 + ... + 306542.

Almost surely, 2^381786288 is an apocalyptic number.

It is an amenable number.

381786288 is an abundant number, since it is smaller than the sum of its proper divisors (680364480).

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

381786288 is a wasteful number, since it uses less digits than its factorization.

381786288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611861 (or 611855 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 51.

The square root of 381786288 is about 19539.3522922332. The cubic root of 381786288 is about 725.4488147692.

The spelling of 381786288 in words is "three hundred eighty-one million, seven hundred eighty-six thousand, two hundred eighty-eight".