45219420 has 36 divisors (see below), whose sum is σ = 137166120. Its totient is φ = 12058464.

The previous prime is 45219401. The next prime is 45219451. The reversal of 45219420 is 2491254.

45219420 is a `hidden beast` number, since 452 + 194 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125430 + ... + 125789.

It is an arithmetic number, because the mean of its divisors is an integer number (3810170).

Almost surely, 2^45219420 is an apocalyptic number.

It is an amenable number.

45219420 is an abundant number, since it is smaller than the sum of its proper divisors (91946700).

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

45219420 is a wasteful number, since it uses less digits than its factorization.

45219420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251234 (or 251229 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 45219420 is about 6724.5386458849. The cubic root of 45219420 is about 356.2665070837.

The spelling of 45219420 in words is "forty-five million, two hundred nineteen thousand, four hundred twenty".