11972445 has 16 divisors (see below), whose sum is σ = 19219200. Its totient is φ = 6364224.

The previous prime is 11972407. The next prime is 11972459. The reversal of 11972445 is 54427911.

It is a happy number.

It is not a de Polignac number, because 11972445 - 2¹⁷ = 11841373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4092 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (1201200).

Almost surely, 2^11972445 is an apocalyptic number.

11972445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11972445 is a deficient number, since it is larger than the sum of its proper divisors (7246755).

11972445 is a wasteful number, since it uses less digits than its factorization.

11972445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644.

The product of its digits is 10080, while the sum is 33.

The square root of 11972445 is about 3460.1221076719. The cubic root of 11972445 is about 228.7674775383.

The spelling of 11972445 in words is "eleven million, nine hundred seventy-two thousand, four hundred forty-five".