11161940 has 24 divisors (see below), whose sum is σ = 23987040. Its totient is φ = 4360608.

The previous prime is 11161939. The next prime is 11161961. The reversal of 11161940 is 4916111.

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, 5630 + ... + 7349.

It is an arithmetic number, because the mean of its divisors is an integer number (999460).

Almost surely, 2^11161940 is an apocalyptic number.

11161940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11161940 is an abundant number, since it is smaller than the sum of its proper divisors (12825100).

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

11161940 is a wasteful number, since it uses less digits than its factorization.

11161940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031 (or 13029 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 11161940 is about 3340.9489669853. The cubic root of 11161940 is about 223.4840644798.

The spelling of 11161940 in words is "eleven million, one hundred sixty-one thousand, nine hundred forty".