20622019 has 4 divisors (see below), whose sum is σ = 22496760. Its totient is φ = 18747280.

The previous prime is 20622001. The next prime is 20622023. The reversal of 20622019 is 91022602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20622019 - 2⁷ = 20621891 is a prime.

It is a super-2 number, since 2×20622019² = 850535335272722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20622029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 937354 + ... + 937375.

It is an arithmetic number, because the mean of its divisors is an integer number (5624190).

Almost surely, 2^20622019 is an apocalyptic number.

20622019 is a deficient number, since it is larger than the sum of its proper divisors (1874741).

20622019 is a wasteful number, since it uses less digits than its factorization.

20622019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874740.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20622019 is about 4541.1473219881. The cubic root of 20622019 is about 274.2271146955.

The spelling of 20622019 in words is "twenty million, six hundred twenty-two thousand, nineteen".