20622408 has 16 divisors (see below), whose sum is σ = 51556080. Its totient is φ = 6874128.

The previous prime is 20622403. The next prime is 20622419. The reversal of 20622408 is 80422602.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 859267 = 20622408 / (2 + 0 + 6 + 2 + 2 + 4 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (20622401) 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, 429610 + ... + 429657.

It is an arithmetic number, because the mean of its divisors is an integer number (3222255).

Almost surely, 2^20622408 is an apocalyptic number.

It is an amenable number.

20622408 is an abundant number, since it is smaller than the sum of its proper divisors (30933672).

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

20622408 is a wasteful number, since it uses less digits than its factorization.

20622408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859276 (or 859272 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20622408 is about 4541.1901523720. The cubic root of 20622408 is about 274.2288389637.

The spelling of 20622408 in words is "twenty million, six hundred twenty-two thousand, four hundred eight".