405772 has 12 divisors (see below), whose sum is σ = 722176. Its totient is φ = 199440.

The previous prime is 405767. The next prime is 405781. The reversal of 405772 is 277504.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588 + ... + 1075.

2⁴⁰⁵⁷⁷² is an apocalyptic number.

It is an amenable number.

405772 is a deficient number, since it is larger than the sum of its proper divisors (316404).

405772 is a wasteful number, since it uses less digits than its factorization.

405772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 405772 is about 637.0023547837. The cubic root of 405772 is about 74.0333426563.

The spelling of 405772 in words is "four hundred five thousand, seven hundred seventy-two".