11552720 has 20 divisors (see below), whose sum is σ = 26860260. Its totient is φ = 4621056.

The previous prime is 11552719. The next prime is 11552771. The reversal of 11552720 is 2725511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9168784 + 2383936 = 3028^2 + 1544^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72125 + ... + 72284.

It is an arithmetic number, because the mean of its divisors is an integer number (1343013).

Almost surely, 2^11552720 is an apocalyptic number.

11552720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11552720 is an abundant number, since it is smaller than the sum of its proper divisors (15307540).

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

11552720 is a wasteful number, since it uses less digits than its factorization.

11552720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144422 (or 144416 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 11552720 is about 3398.9292431588. The cubic root of 11552720 is about 226.0622691078.

The spelling of 11552720 in words is "eleven million, five hundred fifty-two thousand, seven hundred twenty".