11143864 has 8 divisors (see below), whose sum is σ = 20894760. Its totient is φ = 5571928.

The previous prime is 11143817. The next prime is 11143871. The reversal of 11143864 is 46834111.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696484 + ... + 696499.

It is an arithmetic number, because the mean of its divisors is an integer number (2611845).

Almost surely, 2^11143864 is an apocalyptic number.

It is an amenable number.

11143864 is a deficient number, since it is larger than the sum of its proper divisors (9750896).

11143864 is a wasteful number, since it uses less digits than its factorization.

11143864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392989 (or 1392985 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 11143864 is about 3338.2426514560. The cubic root of 11143864 is about 223.3633602359.

Subtracting from 11143864 its product of digits (2304), we obtain a triangular number (11141560 = T₄₇₂₀).

Adding to 11143864 its reverse (46834111), we get a palindrome (57977975).

It can be divided in two parts, 1114386 and 4, that multiplied together give a palindrome (4457544).

The spelling of 11143864 in words is "eleven million, one hundred forty-three thousand, eight hundred sixty-four".