451636040 has 16 divisors (see below), whose sum is σ = 1016181180. Its totient is φ = 180654400.

The previous prime is 451636037. The next prime is 451636051. The reversal of 451636040 is 40636154.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 368716804 + 82919236 = 19202^2 + 9106^2 .

It is a super-2 number, since 2×451636040² = 407950225253763200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 451635994 and 451636012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5645411 + ... + 5645490.

Almost surely, 2^451636040 is an apocalyptic number.

451636040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451636040 is an abundant number, since it is smaller than the sum of its proper divisors (564545140).

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

451636040 is a wasteful number, since it uses less digits than its factorization.

451636040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11290912 (or 11290908 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 451636040 is about 21251.7302824970. The cubic root of 451636040 is about 767.2369854259.

The spelling of 451636040 in words is "four hundred fifty-one million, six hundred thirty-six thousand, forty".