20442068 has 6 divisors (see below), whose sum is σ = 35773626. Its totient is φ = 10221032.

The previous prime is 20442061. The next prime is 20442091. The reversal of 20442068 is 86024402.

It can be written as a sum of positive squares in only one way, i.e., 10316944 + 10125124 = 3212^2 + 3182^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555255 + ... + 2555262.

It is an arithmetic number, because the mean of its divisors is an integer number (5962271).

Almost surely, 2^20442068 is an apocalyptic number.

It is an amenable number.

20442068 is a deficient number, since it is larger than the sum of its proper divisors (15331558).

20442068 is a wasteful number, since it uses less digits than its factorization.

20442068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110521 (or 5110519 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 20442068 is about 4521.2905237332. The cubic root of 20442068 is about 273.4271335150.

The spelling of 20442068 in words is "twenty million, four hundred forty-two thousand, sixty-eight".