11552820 has 24 divisors (see below), whose sum is σ = 32348064. Its totient is φ = 3080736.

The previous prime is 11552819. The next prime is 11552833. The reversal of 11552820 is 2825511.

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, 96214 + ... + 96333.

It is an arithmetic number, because the mean of its divisors is an integer number (1347836).

Almost surely, 2^11552820 is an apocalyptic number.

11552820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11552820 is an abundant number, since it is smaller than the sum of its proper divisors (20795244).

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

11552820 is a wasteful number, since it uses less digits than its factorization.

11552820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192559 (or 192557 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 11552820 is about 3398.9439536421. The cubic root of 11552820 is about 226.0629213687.

The spelling of 11552820 in words is "eleven million, five hundred fifty-two thousand, eight hundred twenty".