22157496 has 64 divisors (see below), whose sum is σ = 64800000. Its totient is φ = 6995808.

The previous prime is 22157491. The next prime is 22157497. The reversal of 22157496 is 69475122.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22157496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1405 + ... + 6803.

It is an arithmetic number, because the mean of its divisors is an integer number (1012500).

Almost surely, 2^22157496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22157496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32400000).

22157496 is an abundant number, since it is smaller than the sum of its proper divisors (42642504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22157496 is a wasteful number, since it uses less digits than its factorization.

22157496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5433 (or 5423 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 22157496 is about 4707.1749489476. The cubic root of 22157496 is about 280.8709952709.

The spelling of 22157496 in words is "twenty-two million, one hundred fifty-seven thousand, four hundred ninety-six".