11157864 has 32 divisors (see below), whose sum is σ = 29364000. Its totient is φ = 3523392.

The previous prime is 11157827. The next prime is 11157869. The reversal of 11157864 is 46875111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11157869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11779 + ... + 12690.

It is an arithmetic number, because the mean of its divisors is an integer number (917625).

Almost surely, 2^11157864 is an apocalyptic number.

It is an amenable number.

11157864 is an abundant number, since it is smaller than the sum of its proper divisors (18206136).

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

11157864 is a wasteful number, since it uses less digits than its factorization.

11157864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24497 (or 24493 counting only the distinct ones).

The product of its digits is 6720, while the sum is 33.

The square root of 11157864 is about 3340.3389049616. The cubic root of 11157864 is about 223.4568579802.

It can be divided in two parts, 11157 and 864, that added together give a palindrome (12021).

The spelling of 11157864 in words is "eleven million, one hundred fifty-seven thousand, eight hundred sixty-four".