4645220 has 24 divisors (see below), whose sum is σ = 10092600. Its totient is φ = 1793792.

The previous prime is 4645187. The next prime is 4645231. The reversal of 4645220 is 225464.

It can be written as a sum of positive squares in 4 ways, for example, as 732736 + 3912484 = 856^2 + 1978^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425 + ... + 4584.

It is an arithmetic number, because the mean of its divisors is an integer number (420525).

Almost surely, 2^4645220 is an apocalyptic number.

It is an amenable number.

4645220 is an abundant number, since it is smaller than the sum of its proper divisors (5447380).

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

4645220 is a wasteful number, since it uses less digits than its factorization.

4645220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8047 (or 8045 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4645220 is about 2155.2772443470. The cubic root of 4645220 is about 166.8535414996.

The spelling of 4645220 in words is "four million, six hundred forty-five thousand, two hundred twenty".