11801956 has 12 divisors (see below), whose sum is σ = 21365820. Its totient is φ = 5697440.

The previous prime is 11801941. The next prime is 11801969. The reversal of 11801956 is 65910811.

It can be written as a sum of positive squares in 2 ways, for example, as 2005056 + 9796900 = 1416^2 + 3130^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50755 + ... + 50986.

It is an arithmetic number, because the mean of its divisors is an integer number (1780485).

Almost surely, 2^11801956 is an apocalyptic number.

It is an amenable number.

11801956 is a deficient number, since it is larger than the sum of its proper divisors (9563864).

11801956 is a wasteful number, since it uses less digits than its factorization.

11801956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101774 (or 101772 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 11801956 is about 3435.3975024733. The cubic root of 11801956 is about 227.6763901915.

It can be divided in two parts, 1180 and 1956, that added together give a square (3136 = 56²).

The spelling of 11801956 in words is "eleven million, eight hundred one thousand, nine hundred fifty-six".