45771228 has 72 divisors (see below), whose sum is σ = 123898320. Its totient is φ = 14204160.

The previous prime is 45771217. The next prime is 45771233. The reversal of 45771228 is 82217754.

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 = 45771192 and 45771201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41176 + ... + 42272.

It is an arithmetic number, because the mean of its divisors is an integer number (1720810).

Almost surely, 2^45771228 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 45771228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61949160).

45771228 is an abundant number, since it is smaller than the sum of its proper divisors (78127092).

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

45771228 is a wasteful number, since it uses less digits than its factorization.

45771228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1182 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 45771228 is about 6765.4436661611. The cubic root of 45771228 is about 357.7098134286.

The spelling of 45771228 in words is "forty-five million, seven hundred seventy-one thousand, two hundred twenty-eight".