4644520 has 16 divisors (see below), whose sum is σ = 10450260. Its totient is φ = 1857792.

The previous prime is 4644511. The next prime is 4644527. The reversal of 4644520 is 254464.

It can be written as a sum of positive squares in 2 ways, for example, as 4605316 + 39204 = 2146^2 + 198^2 .

It is not an unprimeable number, because it can be changed into a prime (4644527) 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, 58017 + ... + 58096.

Almost surely, 2^4644520 is an apocalyptic number.

4644520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4644520 is an abundant number, since it is smaller than the sum of its proper divisors (5805740).

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

4644520 is a wasteful number, since it uses less digits than its factorization.

4644520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116124 (or 116120 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4644520 is about 2155.1148461277. The cubic root of 4644520 is about 166.8451598839.

Adding to 4644520 its reverse (254464), we get a palindrome (4898984).

The spelling of 4644520 in words is "four million, six hundred forty-four thousand, five hundred twenty".