22239516 has 48 divisors (see below), whose sum is σ = 57409184. Its totient is φ = 6656256.

The previous prime is 22239509. The next prime is 22239517. The reversal of 22239516 is 61593222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22239517) 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, 3846 + ... + 7698.

Almost surely, 2^22239516 is an apocalyptic number.

22239516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22239516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28704592).

22239516 is an abundant number, since it is smaller than the sum of its proper divisors (35169668).

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

22239516 is a wasteful number, since it uses less digits than its factorization.

22239516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910 (or 3908 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 22239516 is about 4715.8791333112. The cubic root of 22239516 is about 281.2171335421.

The spelling of 22239516 in words is "twenty-two million, two hundred thirty-nine thousand, five hundred sixteen".