406630740 has 48 divisors (see below), whose sum is σ = 1169344512. Its totient is φ = 105503616.

The previous prime is 406630711. The next prime is 406630753. The reversal of 406630740 is 47036604.

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

It is a junction number, because it is equal to n+sod(n) for n = 406630698 and 406630707.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 89364 + ... + 93803.

It is an arithmetic number, because the mean of its divisors is an integer number (24361344).

Almost surely, 2^406630740 is an apocalyptic number.

It is an amenable number.

406630740 is an abundant number, since it is smaller than the sum of its proper divisors (762713772).

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

406630740 is a wasteful number, since it uses less digits than its factorization.

406630740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183216 (or 183214 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 406630740 is about 20165.0871557750. The cubic root of 406630740 is about 740.8553173204.

The spelling of 406630740 in words is "four hundred six million, six hundred thirty thousand, seven hundred forty".