22028637 has 8 divisors (see below), whose sum is σ = 29422336. Its totient is φ = 14660352.

The previous prime is 22028623. The next prime is 22028639. The reversal of 22028637 is 73682022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22028637 - 2⁴ = 22028621 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 (22028639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4228 + ... + 7869.

It is an arithmetic number, because the mean of its divisors is an integer number (3677792).

Almost surely, 2^22028637 is an apocalyptic number.

It is an amenable number.

22028637 is a deficient number, since it is larger than the sum of its proper divisors (7393699).

22028637 is a wasteful number, since it uses less digits than its factorization.

22028637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12707.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 22028637 is about 4693.4674815109. The cubic root of 22028637 is about 280.3254591397.

The spelling of 22028637 in words is "twenty-two million, twenty-eight thousand, six hundred thirty-seven".