406816672 has 12 divisors (see below), whose sum is σ = 800920386. Its totient is φ = 203408320.

The previous prime is 406816661. The next prime is 406816691. The reversal of 406816672 is 276618604.

It can be written as a sum of positive squares in only one way, i.e., 362673936 + 44142736 = 19044^2 + 6644^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6356479 + ... + 6356542.

Almost surely, 2^406816672 is an apocalyptic number.

It is an amenable number.

406816672 is a deficient number, since it is larger than the sum of its proper divisors (394103714).

406816672 is a wasteful number, since it uses less digits than its factorization.

406816672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12713031 (or 12713023 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 406816672 is about 20169.6968742716. The cubic root of 406816672 is about 740.9682188692.

The spelling of 406816672 in words is "four hundred six million, eight hundred sixteen thousand, six hundred seventy-two".