406012920 has 32 divisors (see below), whose sum is σ = 1218039120. Its totient is φ = 108270080.

The previous prime is 406012909. The next prime is 406012949. The reversal of 406012920 is 29210604.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 1691601 + ... + 1691840.

Almost surely, 2^406012920 is an apocalyptic number.

406012920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406012920 is an abundant number, since it is smaller than the sum of its proper divisors (812026200).

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

406012920 is a wasteful number, since it uses less digits than its factorization.

406012920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383455 (or 3383451 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 406012920 is about 20149.7622814762. The cubic root of 406012920 is about 740.4799175658.

The spelling of 406012920 in words is "four hundred six million, twelve thousand, nine hundred twenty".