20220442 has 8 divisors (see below), whose sum is σ = 33088032. Its totient is φ = 9191100.

The previous prime is 20220407. The next prime is 20220451. The reversal of 20220442 is 24402202.

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

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, 459534 + ... + 459577.

It is an arithmetic number, because the mean of its divisors is an integer number (4136004).

Almost surely, 2^20220442 is an apocalyptic number.

20220442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20220442 is a deficient number, since it is larger than the sum of its proper divisors (12867590).

20220442 is a wasteful number, since it uses less digits than its factorization.

20220442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919124.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 20220442 is about 4496.7145784450. The cubic root of 20220442 is about 272.4354059505.

Adding to 20220442 its reverse (24402202), we get a palindrome (44622644).

The spelling of 20220442 in words is "twenty million, two hundred twenty thousand, four hundred forty-two".