22037945 has 4 divisors (see below), whose sum is σ = 26445540. Its totient is φ = 17630352.

The previous prime is 22037927. The next prime is 22037989. The reversal of 22037945 is 54973022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13697401 + 8340544 = 3701^2 + 2888^2 .

It is a cyclic number.

It is not a de Polignac number, because 22037945 - 2⁶ = 22037881 is a prime.

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, 2203790 + ... + 2203799.

It is an arithmetic number, because the mean of its divisors is an integer number (6611385).

Almost surely, 2^22037945 is an apocalyptic number.

It is an amenable number.

22037945 is a deficient number, since it is larger than the sum of its proper divisors (4407595).

22037945 is an equidigital number, since it uses as much as digits as its factorization.

22037945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4407594.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 22037945 is about 4694.4589677619. The cubic root of 22037945 is about 280.3649365701.

The spelling of 22037945 in words is "twenty-two million, thirty-seven thousand, nine hundred forty-five".