20622465 has 32 divisors (see below), whose sum is σ = 36915840. Its totient is φ = 10922688.

The previous prime is 20622463. The next prime is 20622487. The reversal of 20622465 is 56422602.

It is not a de Polignac number, because 20622465 - 2¹ = 20622463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20622463) 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 31 ways as a sum of consecutive naturals, for example, 22914 + ... + 23796.

It is an arithmetic number, because the mean of its divisors is an integer number (1153620).

Almost surely, 2^20622465 is an apocalyptic number.

It is an amenable number.

20622465 is a deficient number, since it is larger than the sum of its proper divisors (16293375).

20622465 is a wasteful number, since it uses less digits than its factorization.

20622465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20622465 is about 4541.1964282554. The cubic root of 20622465 is about 274.2290916182.

The spelling of 20622465 in words is "twenty million, six hundred twenty-two thousand, four hundred sixty-five".