4640520 has 32 divisors (see below), whose sum is σ = 13921920. Its totient is φ = 1237440.

The previous prime is 4640501. The next prime is 4640543. The reversal of 4640520 is 250464.

It is a happy 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, 19216 + ... + 19455.

It is an arithmetic number, because the mean of its divisors is an integer number (435060).

Almost surely, 2^4640520 is an apocalyptic number.

4640520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4640520 is an abundant number, since it is smaller than the sum of its proper divisors (9281400).

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

4640520 is a wasteful number, since it uses less digits than its factorization.

4640520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38685 (or 38681 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4640520 is about 2154.1866214421. The cubic root of 4640520 is about 166.7972487743.

Adding to 4640520 its reverse (250464), we get a palindrome (4890984).

The spelling of 4640520 in words is "four million, six hundred forty thousand, five hundred twenty".