22154916 has 48 divisors (see below), whose sum is σ = 59905664. Its totient is φ = 6241536.

The previous prime is 22154887. The next prime is 22154929. The reversal of 22154916 is 61945122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4326 + ... + 7938.

Almost surely, 2^22154916 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 22154916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29952832).

22154916 is an abundant number, since it is smaller than the sum of its proper divisors (37750748).

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

22154916 is a wasteful number, since it uses less digits than its factorization.

22154916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700 (or 3698 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 22154916 is about 4706.9008912447. The cubic root of 22154916 is about 280.8600933878.

The spelling of 22154916 in words is "twenty-two million, one hundred fifty-four thousand, nine hundred sixteen".