20442446 has 8 divisors (see below), whose sum is σ = 31996944. Its totient is φ = 9776800.

The previous prime is 20442439. The next prime is 20442451. The reversal of 20442446 is 64424402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222155 + ... + 222246.

It is an arithmetic number, because the mean of its divisors is an integer number (3999618).

Almost surely, 2^20442446 is an apocalyptic number.

20442446 is a deficient number, since it is larger than the sum of its proper divisors (11554498).

20442446 is a wasteful number, since it uses less digits than its factorization.

20442446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444426.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 20442446 is about 4521.3323257642. The cubic root of 20442446 is about 273.4288188438.

Adding to 20442446 its reverse (64424402), we get a palindrome (84866848).

The spelling of 20442446 in words is "twenty million, four hundred forty-two thousand, four hundred forty-six".