400030636 has 12 divisors (see below), whose sum is σ = 736898680. Its totient is φ = 189488160.

The previous prime is 400030601. The next prime is 400030637. The reversal of 400030636 is 636030004.

It is not an unprimeable number, because it can be changed into a prime (400030637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2631705 + ... + 2631856.

Almost surely, 2^400030636 is an apocalyptic number.

It is an amenable number.

400030636 is a deficient number, since it is larger than the sum of its proper divisors (336868044).

400030636 is a wasteful number, since it uses less digits than its factorization.

400030636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263584 (or 5263582 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 400030636 is about 20000.7658853355. The cubic root of 400030636 is about 736.8251099127.

The spelling of 400030636 in words is "four hundred million, thirty thousand, six hundred thirty-six".