451440156 has 12 divisors (see below), whose sum is σ = 1053360392. Its totient is φ = 150480048.

The previous prime is 451440137. The next prime is 451440161. The reversal of 451440156 is 651044154.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 18809995 + ... + 18810018.

Almost surely, 2^451440156 is an apocalyptic number.

It is an amenable number.

451440156 is an abundant number, since it is smaller than the sum of its proper divisors (601920236).

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

451440156 is a wasteful number, since it uses less digits than its factorization.

451440156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37620020 (or 37620018 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 451440156 is about 21247.1211226368. The cubic root of 451440156 is about 767.1260471412.

The spelling of 451440156 in words is "four hundred fifty-one million, four hundred forty thousand, one hundred fifty-six".