20922446 has 4 divisors (see below), whose sum is σ = 31383672. Its totient is φ = 10461222.

The previous prime is 20922413. The next prime is 20922463. The reversal of 20922446 is 64422902.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5230610 + ... + 5230613.

It is an arithmetic number, because the mean of its divisors is an integer number (7845918).

Almost surely, 2^20922446 is an apocalyptic number.

20922446 is a deficient number, since it is larger than the sum of its proper divisors (10461226).

20922446 is a wasteful number, since it uses less digits than its factorization.

20922446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10461225.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 20922446 is about 4574.1060328768. The cubic root of 20922446 is about 275.5523707455.

The spelling of 20922446 in words is "twenty million, nine hundred twenty-two thousand, four hundred forty-six".