400630336 has 28 divisors (see below), whose sum is σ = 796942780. Its totient is φ = 199825920.

The previous prime is 400630301. The next prime is 400630367. The reversal of 400630336 is 633036004.

It can be written as a sum of positive squares in 2 ways, for example, as 31990336 + 368640000 = 5656^2 + 19200^2 .

It is a super-2 number, since 2×400630336² = 321009332246945792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400630336.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19510 + ... + 34378.

Almost surely, 2^400630336 is an apocalyptic number.

It is an amenable number.

400630336 is a deficient number, since it is larger than the sum of its proper divisors (396312444).

400630336 is a wasteful number, since it uses less digits than its factorization.

400630336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15302 (or 15292 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 400630336 is about 20015.7521967075. The cubic root of 400630336 is about 737.1931262201.

The spelling of 400630336 in words is "four hundred million, six hundred thirty thousand, three hundred thirty-six".