406642368 has 56 divisors (see below), whose sum is σ = 1173723840. Its totient is φ = 123224320.

The previous prime is 406642367. The next prime is 406642373. The reversal of 406642368 is 863246604.

It is not an unprimeable number, because it can be changed into a prime (406642367) 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, 94158 + ... + 98381.

Almost surely, 2^406642368 is an apocalyptic number.

406642368 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

406642368 is an abundant number, since it is smaller than the sum of its proper divisors (767081472).

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

406642368 is a wasteful number, since it uses less digits than its factorization.

406642368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192565 (or 192555 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The square root of 406642368 is about 20165.3754738165. The cubic root of 406642368 is about 740.8623790783.

The spelling of 406642368 in words is "four hundred six million, six hundred forty-two thousand, three hundred sixty-eight".