45220388 has 12 divisors (see below), whose sum is σ = 79193100. Its totient is φ = 22593792.

The previous prime is 45220387. The next prime is 45220429. The reversal of 45220388 is 88302254.

It can be written as a sum of positive squares in 2 ways, for example, as 22486564 + 22733824 = 4742^2 + 4768^2 .

It is not an unprimeable number, because it can be changed into a prime (45220381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3788 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (6599425).

Almost surely, 2^45220388 is an apocalyptic number.

It is an amenable number.

45220388 is a deficient number, since it is larger than the sum of its proper divisors (33972712).

45220388 is a wasteful number, since it uses less digits than its factorization.

45220388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8206 (or 8204 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 45220388 is about 6724.6106206977. The cubic root of 45220388 is about 356.2690492327.

The spelling of 45220388 in words is "forty-five million, two hundred twenty thousand, three hundred eighty-eight".