11957540 has 24 divisors (see below), whose sum is σ = 28698432. Its totient is φ = 4099680.

The previous prime is 11957531. The next prime is 11957563. The reversal of 11957540 is 4575911.

11957540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11957497 and 11957506.

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, 42566 + ... + 42845.

It is an arithmetic number, because the mean of its divisors is an integer number (1195768).

Almost surely, 2^11957540 is an apocalyptic number.

11957540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11957540 is an abundant number, since it is smaller than the sum of its proper divisors (16740892).

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

11957540 is a wasteful number, since it uses less digits than its factorization.

11957540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85427 (or 85425 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 11957540 is about 3457.9676111844. The cubic root of 11957540 is about 228.6725040324.

The spelling of 11957540 in words is "eleven million, nine hundred fifty-seven thousand, five hundred forty".