20600442 has 24 divisors (see below), whose sum is σ = 44939700. Its totient is φ = 6819840.

The previous prime is 20600431. The next prime is 20600449. The reversal of 20600442 is 24400602.

20600442 is a `hidden beast` number, since 20 + 600 + 4 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20331081 + 269361 = 4509^2 + 519^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20600449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1159 + ... + 6522.

Almost surely, 2^20600442 is an apocalyptic number.

20600442 is an abundant number, since it is smaller than the sum of its proper divisors (24339258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20600442 is a wasteful number, since it uses less digits than its factorization.

20600442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7838 (or 7835 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20600442 is about 4538.7709790206. The cubic root of 20600442 is about 274.1314392377.

The spelling of 20600442 in words is "twenty million, six hundred thousand, four hundred forty-two".