22516390 has 32 divisors (see below), whose sum is σ = 43858080. Its totient is φ = 8273664.

The previous prime is 22516369. The next prime is 22516393. The reversal of 22516390 is 9361522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22516393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49042 + ... + 49498.

It is an arithmetic number, because the mean of its divisors is an integer number (1370565).

Almost surely, 2^22516390 is an apocalyptic number.

22516390 is a deficient number, since it is larger than the sum of its proper divisors (21341690).

22516390 is a wasteful number, since it uses less digits than its factorization.

22516390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 22516390 is about 4745.1438334365. The cubic root of 22516390 is about 282.3793412730.

The spelling of 22516390 in words is "twenty-two million, five hundred sixteen thousand, three hundred ninety".