20622895 has 16 divisors (see below), whose sum is σ = 25509888. Its totient is φ = 15996960.

The previous prime is 20622869. The next prime is 20622911. The reversal of 20622895 is 59822602.

It is not a de Polignac number, because 20622895 - 2⁹ = 20622383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20622895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29500 + ... + 30190.

It is an arithmetic number, because the mean of its divisors is an integer number (1594368).

Almost surely, 2^20622895 is an apocalyptic number.

20622895 is a deficient number, since it is larger than the sum of its proper divisors (4886993).

20622895 is a wasteful number, since it uses less digits than its factorization.

20622895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20622895 is about 4541.2437723602. The cubic root of 20622895 is about 274.2309975929.

The spelling of 20622895 in words is "twenty million, six hundred twenty-two thousand, eight hundred ninety-five".