406670724 has 36 divisors (see below), whose sum is σ = 1029100800. Its totient is φ = 135408240.

The previous prime is 406670707. The next prime is 406670729. The reversal of 406670724 is 427076604.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (406670729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29977 + ... + 41375.

Almost surely, 2^406670724 is an apocalyptic number.

It is an amenable number.

406670724 is an abundant number, since it is smaller than the sum of its proper divisors (622430076).

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

406670724 is a wasteful number, since it uses less digits than its factorization.

406670724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12400 (or 12395 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 406670724 is about 20166.0785478982. The cubic root of 406670724 is about 740.8795992919.

The spelling of 406670724 in words is "four hundred six million, six hundred seventy thousand, seven hundred twenty-four".