22621316 has 6 divisors (see below), whose sum is σ = 39587310. Its totient is φ = 11310656.

The previous prime is 22621309. The next prime is 22621327. The reversal of 22621316 is 61312622.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 9947716 = 3560^2 + 3154^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22621291 and 22621300.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827661 + ... + 2827668.

It is an arithmetic number, because the mean of its divisors is an integer number (6597885).

Almost surely, 2^22621316 is an apocalyptic number.

It is an amenable number.

22621316 is a deficient number, since it is larger than the sum of its proper divisors (16965994).

22621316 is a wasteful number, since it uses less digits than its factorization.

22621316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655333 (or 5655331 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 22621316 is about 4756.1871283624. The cubic root of 22621316 is about 282.8172893647.

Adding to 22621316 its reverse (61312622), we get a palindrome (83933938).

It can be divided in two parts, 2262 and 1316, that multiplied together give a palindrome (2976792).

The spelling of 22621316 in words is "twenty-two million, six hundred twenty-one thousand, three hundred sixteen".