11641972 has 12 divisors (see below), whose sum is σ = 20707876. Its totient is φ = 5725440.

The previous prime is 11641961. The next prime is 11642009. The reversal of 11641972 is 27914611.

It can be written as a sum of positive squares in 2 ways, for example, as 712336 + 10929636 = 844^2 + 3306^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23613 + ... + 24100.

Almost surely, 2^11641972 is an apocalyptic number.

It is an amenable number.

11641972 is a deficient number, since it is larger than the sum of its proper divisors (9065904).

11641972 is a wasteful number, since it uses less digits than its factorization.

11641972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47778 (or 47776 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 11641972 is about 3412.0334113253. The cubic root of 11641972 is about 226.6429338858.

It can be divided in two parts, 1164 and 1972, that added together give a square (3136 = 56²).

The spelling of 11641972 in words is "eleven million, six hundred forty-one thousand, nine hundred seventy-two".