20442254 has 8 divisors (see below), whose sum is σ = 35043888. Its totient is φ = 8760960.

The previous prime is 20442203. The next prime is 20442269. The reversal of 20442254 is 45224402.

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, 730067 + ... + 730094.

It is an arithmetic number, because the mean of its divisors is an integer number (4380486).

Almost surely, 2^20442254 is an apocalyptic number.

20442254 is a deficient number, since it is larger than the sum of its proper divisors (14601634).

20442254 is a wasteful number, since it uses less digits than its factorization.

20442254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460170.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 20442254 is about 4521.3110930349. The cubic root of 20442254 is about 273.4279628064.

Adding to 20442254 its reverse (45224402), we get a palindrome (65666656).

The spelling of 20442254 in words is "twenty million, four hundred forty-two thousand, two hundred fifty-four".