20261022 has 16 divisors (see below), whose sum is σ = 42284160. Its totient is φ = 6459992.

The previous prime is 20261009. The next prime is 20261023. The reversal of 20261022 is 22016202.

It is a junction number, because it is equal to n+sod(n) for n = 20260992 and 20261010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73272 + ... + 73547.

It is an arithmetic number, because the mean of its divisors is an integer number (2642760).

Almost surely, 2^20261022 is an apocalyptic number.

20261022 is an abundant number, since it is smaller than the sum of its proper divisors (22023138).

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

20261022 is a wasteful number, since it uses less digits than its factorization.

20261022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146847.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20261022 is about 4501.2245000666. The cubic root of 20261022 is about 272.6175325557.

Adding to 20261022 its reverse (22016202), we get a palindrome (42277224).

The spelling of 20261022 in words is "twenty million, two hundred sixty-one thousand, twenty-two".