445454772 has 96 divisors (see below), whose sum is σ = 1266585600. Its totient is φ = 119014272.

The previous prime is 445454741. The next prime is 445454783. The reversal of 445454772 is 277454544.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124318 + ... + 127850.

It is an arithmetic number, because the mean of its divisors is an integer number (13193600).

Almost surely, 2^445454772 is an apocalyptic number.

445454772 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445454772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633292800).

445454772 is an abundant number, since it is smaller than the sum of its proper divisors (821130828).

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

445454772 is a wasteful number, since it uses less digits than its factorization.

445454772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3645 (or 3643 counting only the distinct ones).

The product of its digits is 627200, while the sum is 42.

The square root of 445454772 is about 21105.7994873447. The cubic root of 445454772 is about 763.7206589125.

The spelling of 445454772 in words is "four hundred forty-five million, four hundred fifty-four thousand, seven hundred seventy-two".