11573994 has 32 divisors (see below), whose sum is σ = 23794560. Its totient is φ = 3752000.

The previous prime is 11573993. The next prime is 11574001. The reversal of 11573994 is 49937511.

It is a happy number.

11573994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11573994² = 267914674224072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11573993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42892 + ... + 43160.

It is an arithmetic number, because the mean of its divisors is an integer number (743580).

Almost surely, 2^11573994 is an apocalyptic number.

11573994 is an abundant number, since it is smaller than the sum of its proper divisors (12220566).

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

11573994 is a wasteful number, since it uses less digits than its factorization.

11573994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446.

The product of its digits is 34020, while the sum is 39.

The square root of 11573994 is about 3402.0573187411. The cubic root of 11573994 is about 226.2009463976.

It can be divided in two parts, 1157 and 3994, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 11573994 in words is "eleven million, five hundred seventy-three thousand, nine hundred ninety-four".