20715622 has 8 divisors (see below), whose sum is σ = 32901336. Its totient is φ = 9748512.

The previous prime is 20715589. The next prime is 20715623. The reversal of 20715622 is 22651702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20715623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304608 + ... + 304675.

It is an arithmetic number, because the mean of its divisors is an integer number (4112667).

Almost surely, 2^20715622 is an apocalyptic number.

20715622 is a deficient number, since it is larger than the sum of its proper divisors (12185714).

20715622 is a wasteful number, since it uses less digits than its factorization.

20715622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609302.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20715622 is about 4551.4417495998. The cubic root of 20715622 is about 274.6413926247.

The spelling of 20715622 in words is "twenty million, seven hundred fifteen thousand, six hundred twenty-two".