22872401 has 4 divisors (see below), whose sum is σ = 23490612. Its totient is φ = 22254192.

The previous prime is 22872397. The next prime is 22872403. The reversal of 22872401 is 10427822.

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 8614225 + 14258176 = 2935^2 + 3776^2 .

It is a cyclic number.

It is not a de Polignac number, because 22872401 - 2² = 22872397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22872403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309050 + ... + 309123.

It is an arithmetic number, because the mean of its divisors is an integer number (5872653).

Almost surely, 2^22872401 is an apocalyptic number.

It is an amenable number.

22872401 is a deficient number, since it is larger than the sum of its proper divisors (618211).

22872401 is an equidigital number, since it uses as much as digits as its factorization.

22872401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618210.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 22872401 is about 4782.5099058967. The cubic root of 22872401 is about 283.8598172483.

The spelling of 22872401 in words is "twenty-two million, eight hundred seventy-two thousand, four hundred one".