445911228 has 72 divisors (see below), whose sum is σ = 1356001920. Its totient is φ = 120696480.

The previous prime is 445911227. The next prime is 445911233. The reversal of 445911228 is 822119544.

445911228 is a `hidden beast` number, since 44 + 591 + 1 + 2 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 445911192 and 445911201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445911227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41778 + ... + 51353.

It is an arithmetic number, because the mean of its divisors is an integer number (18833360).

Almost surely, 2^445911228 is an apocalyptic number.

It is an amenable number.

445911228 is an abundant number, since it is smaller than the sum of its proper divisors (910090692).

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

445911228 is a wasteful number, since it uses less digits than its factorization.

445911228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93167 (or 93162 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 445911228 is about 21116.6102393353. The cubic root of 445911228 is about 763.9814305219.

The spelling of 445911228 in words is "four hundred forty-five million, nine hundred eleven thousand, two hundred twenty-eight".