45421228 has 12 divisors (see below), whose sum is σ = 82943280. Its totient is φ = 21723152.

The previous prime is 45421219. The next prime is 45421241. The reversal of 45421228 is 82212454.

It is a junction number, because it is equal to n+sod(n) for n = 45421196 and 45421205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246763 + ... + 246946.

It is an arithmetic number, because the mean of its divisors is an integer number (6911940).

Almost surely, 2^45421228 is an apocalyptic number.

It is an amenable number.

45421228 is a deficient number, since it is larger than the sum of its proper divisors (37522052).

45421228 is a wasteful number, since it uses less digits than its factorization.

45421228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493736 (or 493734 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 45421228 is about 6739.5272831260. The cubic root of 45421228 is about 356.7957099466.

The spelling of 45421228 in words is "forty-five million, four hundred twenty-one thousand, two hundred twenty-eight".