451389628 has 24 divisors (see below), whose sum is σ = 825753600. Its totient is φ = 215495280.

The previous prime is 451389583. The next prime is 451389637. The reversal of 451389628 is 826983154.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51013 + ... + 59203.

It is an arithmetic number, because the mean of its divisors is an integer number (34406400).

Almost surely, 2^451389628 is an apocalyptic number.

It is an amenable number.

451389628 is a deficient number, since it is larger than the sum of its proper divisors (374363972).

451389628 is a wasteful number, since it uses less digits than its factorization.

451389628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8817 (or 8815 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 451389628 is about 21245.9320341566. The cubic root of 451389628 is about 767.0974255616.

The spelling of 451389628 in words is "four hundred fifty-one million, three hundred eighty-nine thousand, six hundred twenty-eight".