22157637 has 8 divisors (see below), whose sum is σ = 29984736. Its totient is φ = 14551152.

The previous prime is 22157623. The next prime is 22157659. The reversal of 22157637 is 73675122.

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

It is not a de Polignac number, because 22157637 - 2⁴ = 22157621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22157598 and 22157607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157677) 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, 54918 + ... + 55319.

It is an arithmetic number, because the mean of its divisors is an integer number (3748092).

Almost surely, 2^22157637 is an apocalyptic number.

It is an amenable number.

22157637 is a deficient number, since it is larger than the sum of its proper divisors (7827099).

22157637 is a wasteful number, since it uses less digits than its factorization.

22157637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110307.

The product of its digits is 17640, while the sum is 33.

The square root of 22157637 is about 4707.1899260599. The cubic root of 22157637 is about 280.8715910471.

The spelling of 22157637 in words is "twenty-two million, one hundred fifty-seven thousand, six hundred thirty-seven".