22002397 has 4 divisors (see below), whose sum is σ = 22034140. Its totient is φ = 21970656.

The previous prime is 22002391. The next prime is 22002433. The reversal of 22002397 is 79320022.

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 8415801 + 13586596 = 2901^2 + 3686^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002397 - 2⁷ = 22002269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14808 + ... + 16225.

It is an arithmetic number, because the mean of its divisors is an integer number (5508535).

Almost surely, 2^22002397 is an apocalyptic number.

It is an amenable number.

22002397 is a deficient number, since it is larger than the sum of its proper divisors (31743).

22002397 is an equidigital number, since it uses as much as digits as its factorization.

22002397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31742.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 22002397 is about 4690.6712739223. The cubic root of 22002397 is about 280.2141091934.

The spelling of 22002397 in words is "twenty-two million, two thousand, three hundred ninety-seven".