20620026 has 48 divisors (see below), whose sum is σ = 52450944. Its totient is φ = 5730912.

The previous prime is 20620003. The next prime is 20620037. The reversal of 20620026 is 62002602.

20620026 is a `hidden beast` number, since 20 + 620 + 0 + 26 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 20619990 and 20620008.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2451 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (1092728).

Almost surely, 2^20620026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20620026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26225472).

20620026 is an abundant number, since it is smaller than the sum of its proper divisors (31830918).

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

20620026 is a wasteful number, since it uses less digits than its factorization.

20620026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475 (or 4472 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20620026 is about 4540.9278787490. The cubic root of 20620026 is about 274.2182802510.

Adding to 20620026 its reverse (62002602), we get a palindrome (82622628).

The spelling of 20620026 in words is "twenty million, six hundred twenty thousand, twenty-six".