22321916 has 6 divisors (see below), whose sum is σ = 39063360. Its totient is φ = 11160956.

The previous prime is 22321861. The next prime is 22321919. The reversal of 22321916 is 61912322.

It is a super-3 number, since 3×22321916³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790236 + ... + 2790243.

It is an arithmetic number, because the mean of its divisors is an integer number (6510560).

Almost surely, 2^22321916 is an apocalyptic number.

It is an amenable number.

22321916 is a deficient number, since it is larger than the sum of its proper divisors (16741444).

22321916 is a wasteful number, since it uses less digits than its factorization.

22321916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580483 (or 5580481 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 22321916 is about 4724.6074969250. The cubic root of 22321916 is about 281.5640195668.

The spelling of 22321916 in words is "twenty-two million, three hundred twenty-one thousand, nine hundred sixteen".