406063920 has 40 divisors (see below), whose sum is σ = 1258798896. Its totient is φ = 108283648.

The previous prime is 406063909. The next prime is 406063927. The reversal of 406063920 is 29360604.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (406063927) 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, 845727 + ... + 846206.

Almost surely, 2^406063920 is an apocalyptic number.

406063920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406063920 is an abundant number, since it is smaller than the sum of its proper divisors (852734976).

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

406063920 is a wasteful number, since it uses less digits than its factorization.

406063920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691949 (or 1691943 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 406063920 is about 20151.0277653523. The cubic root of 406063920 is about 740.5109205978.

The spelling of 406063920 in words is "four hundred six million, sixty-three thousand, nine hundred twenty".