406051320 has 64 divisors (see below), whose sum is σ = 1251090720. Its totient is φ = 105352704.

The previous prime is 406051309. The next prime is 406051333. The reversal of 406051320 is 23150604.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41287 + ... + 50166.

Almost surely, 2^406051320 is an apocalyptic number.

406051320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406051320 is an abundant number, since it is smaller than the sum of its proper divisors (845039400).

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

406051320 is a wasteful number, since it uses less digits than its factorization.

406051320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91504 (or 91500 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 406051320 is about 20150.7151237866. The cubic root of 406051320 is about 740.5032612667.

The spelling of 406051320 in words is "four hundred six million, fifty-one thousand, three hundred twenty".