405253868 has 24 divisors (see below), whose sum is σ = 715008000. Its totient is φ = 200972880.

The previous prime is 405253853. The next prime is 405253889. The reversal of 405253868 is 868352504.

It is a super-2 number, since 2×405253868² = 328461395057922848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380705 + ... + 381767.

It is an arithmetic number, because the mean of its divisors is an integer number (29792000).

Almost surely, 2^405253868 is an apocalyptic number.

It is an amenable number.

405253868 is a deficient number, since it is larger than the sum of its proper divisors (309754132).

405253868 is a wasteful number, since it uses less digits than its factorization.

405253868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 405253868 is about 20130.9182105536. The cubic root of 405253868 is about 740.0181807075.

The spelling of 405253868 in words is "four hundred five million, two hundred fifty-three thousand, eight hundred sixty-eight".