451889712 has 80 divisors (see below), whose sum is σ = 1308710880. Its totient is φ = 149280768.

The previous prime is 451889663. The next prime is 451889719. The reversal of 451889712 is 217988154.

It is a super-2 number, since 2×451889712² = 408408623622885888, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (451889719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44188 + ... + 53444.

It is an arithmetic number, because the mean of its divisors is an integer number (16358886).

Almost surely, 2^451889712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451889712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654355440).

451889712 is an abundant number, since it is smaller than the sum of its proper divisors (856821168).

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

451889712 is a wasteful number, since it uses less digits than its factorization.

451889712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9387 (or 9375 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 451889712 is about 21257.6977116526. The cubic root of 451889712 is about 767.3806041040.

The spelling of 451889712 in words is "four hundred fifty-one million, eight hundred eighty-nine thousand, seven hundred twelve".