20261396 has 12 divisors (see below), whose sum is σ = 35532000. Its totient is φ = 10109400.

The previous prime is 20261363. The next prime is 20261407. The reversal of 20261396 is 69316202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3080 + ... + 7071.

It is an arithmetic number, because the mean of its divisors is an integer number (2961000).

Almost surely, 2^20261396 is an apocalyptic number.

It is an amenable number.

20261396 is a deficient number, since it is larger than the sum of its proper divisors (15270604).

20261396 is a wasteful number, since it uses less digits than its factorization.

20261396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10654 (or 10652 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20261396 is about 4501.2660441258. The cubic root of 20261396 is about 272.6192099691.

Adding to 20261396 its reverse (69316202), we get a palindrome (89577598).

The spelling of 20261396 in words is "twenty million, two hundred sixty-one thousand, three hundred ninety-six".