365221872 has 50 divisors (see below), whose sum is σ = 1057061808. Its totient is φ = 121740192.

The previous prime is 365221849. The next prime is 365221873. The reversal of 365221872 is 278122563.

365221872 is a `hidden beast` number, since 365 + 221 + 8 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365221873) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 139608 + ... + 142199.

Almost surely, 2^365221872 is an apocalyptic number.

It is an amenable number.

365221872 is an abundant number, since it is smaller than the sum of its proper divisors (691839936).

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

365221872 is a wasteful number, since it uses less digits than its factorization.

365221872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281827 (or 281812 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 365221872 is about 19110.7789480178. The cubic root of 365221872 is about 714.8017263649.

The spelling of 365221872 in words is "three hundred sixty-five million, two hundred twenty-one thousand, eight hundred seventy-two".