381672616 has 32 divisors (see below), whose sum is σ = 781257960. Its totient is φ = 173740032.

The previous prime is 381672611. The next prime is 381672653. The reversal of 381672616 is 616276183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 296184100 + 85488516 = 17210^2 + 9246^2 .

It is not an unprimeable number, because it can be changed into a prime (381672611) 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, 17545 + ... + 32728.

Almost surely, 2^381672616 is an apocalyptic number.

It is an amenable number.

381672616 is an abundant number, since it is smaller than the sum of its proper divisors (399585344).

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

381672616 is a wasteful number, since it uses less digits than its factorization.

381672616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50365 (or 50361 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 381672616 is about 19536.4432791642. The cubic root of 381672616 is about 725.3768099105.

The spelling of 381672616 in words is "three hundred eighty-one million, six hundred seventy-two thousand, six hundred sixteen".