1200532520 has 64 divisors (see below), whose sum is σ = 3120120000. Its totient is φ = 410874880.

The previous prime is 1200532511. The next prime is 1200532547. The reversal of 1200532520 is 252350021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1200532492 and 1200532501.

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, 72770 + ... + 87729.

It is an arithmetic number, because the mean of its divisors is an integer number (48751875).

Almost surely, 2^1200532520 is an apocalyptic number.

1200532520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200532520 is an abundant number, since it is smaller than the sum of its proper divisors (1919587480).

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

1200532520 is a wasteful number, since it uses less digits than its factorization.

1200532520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160538 (or 160534 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1200532520 is about 34648.7015629735. The cubic root of 1200532520 is about 1062.8157367533.

Adding to 1200532520 its reverse (252350021), we get a palindrome (1452882541).

The spelling of 1200532520 in words is "one billion, two hundred million, five hundred thirty-two thousand, five hundred twenty".