1201604520 has 64 divisors (see below), whose sum is σ = 3613947840. Its totient is φ = 319616000.

The previous prime is 1201604501. The next prime is 1201604567. The reversal of 1201604520 is 254061021.

1201604520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35635 + ... + 60605.

It is an arithmetic number, because the mean of its divisors is an integer number (56467935).

Almost surely, 2^1201604520 is an apocalyptic number.

1201604520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201604520 is an abundant number, since it is smaller than the sum of its proper divisors (2412343320).

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

1201604520 is a wasteful number, since it uses less digits than its factorization.

1201604520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25386 (or 25382 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1201604520 is about 34664.1676663381. The cubic root of 1201604520 is about 1063.1319851680.

Adding to 1201604520 its reverse (254061021), we get a palindrome (1455665541).

The spelling of 1201604520 in words is "one billion, two hundred one million, six hundred four thousand, five hundred twenty".