451689072 has 20 divisors (see below), whose sum is σ = 1166863560. Its totient is φ = 150563008.

The previous prime is 451689059. The next prime is 451689083. The reversal of 451689072 is 270986154.

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, 4705047 + ... + 4705142.

It is an arithmetic number, because the mean of its divisors is an integer number (58343178).

Almost surely, 2^451689072 is an apocalyptic number.

It is an amenable number.

451689072 is an abundant number, since it is smaller than the sum of its proper divisors (715174488).

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

451689072 is a wasteful number, since it uses less digits than its factorization.

451689072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9410200 (or 9410194 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 451689072 is about 21252.9779560418. The cubic root of 451689072 is about 767.2670144137.

The spelling of 451689072 in words is "four hundred fifty-one million, six hundred eighty-nine thousand, seventy-two".