20261162 has 4 divisors (see below), whose sum is σ = 30391746. Its totient is φ = 10130580.

The previous prime is 20261147. The next prime is 20261173. The reversal of 20261162 is 26116202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 1590121 = 4321^2 + 1261^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5065289 + ... + 5065292.

Almost surely, 2^20261162 is an apocalyptic number.

20261162 is a deficient number, since it is larger than the sum of its proper divisors (10130584).

20261162 is a wasteful number, since it uses less digits than its factorization.

20261162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10130583.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20261162 is about 4501.2400513636. The cubic root of 20261162 is about 272.6181604669.

Adding to 20261162 its reverse (26116202), we get a palindrome (46377364).

The spelling of 20261162 in words is "twenty million, two hundred sixty-one thousand, one hundred sixty-two".