20922046 has 8 divisors (see below), whose sum is σ = 31429944. Its totient is φ = 10445400.

The previous prime is 20922043. The next prime is 20922061. The reversal of 20922046 is 64022902.

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

It is a super-2 number, since 2×20922046² = 875464017652232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20922046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20922043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (3928743).

Almost surely, 2^20922046 is an apocalyptic number.

20922046 is a deficient number, since it is larger than the sum of its proper divisors (10507898).

20922046 is a wasteful number, since it uses less digits than its factorization.

20922046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15626.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20922046 is about 4574.0623082770. The cubic root of 20922046 is about 275.5506147103.

Adding to 20922046 its reverse (64022902), we get a palindrome (84944948).

The spelling of 20922046 in words is "twenty million, nine hundred twenty-two thousand, forty-six".