20622516 has 24 divisors (see below), whose sum is σ = 48195840. Its totient is φ = 6863232.

The previous prime is 20622487. The next prime is 20622529. The reversal of 20622516 is 61522602.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10845 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (2008160).

Almost surely, 2^20622516 is an apocalyptic number.

It is an amenable number.

20622516 is an abundant number, since it is smaller than the sum of its proper divisors (27573324).

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

20622516 is a wasteful number, since it uses less digits than its factorization.

20622516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20622516 is about 4541.2020435123. The cubic root of 20622516 is about 274.2293176770.

It can be divided in two parts, 206 and 22516, that added together give a palindrome (22722).

The spelling of 20622516 in words is "twenty million, six hundred twenty-two thousand, five hundred sixteen".