20261793 has 8 divisors (see below), whose sum is σ = 27135648. Its totient is φ = 13447904.

The previous prime is 20261789. The next prime is 20261803. The reversal of 20261793 is 39716202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20261793 - 2² = 20261789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20261793.

It is not an unprimeable number, because it can be changed into a prime (20261713) 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, 14196 + ... + 15557.

It is an arithmetic number, because the mean of its divisors is an integer number (3391956).

Almost surely, 2^20261793 is an apocalyptic number.

It is an amenable number.

20261793 is a deficient number, since it is larger than the sum of its proper divisors (6873855).

20261793 is a wasteful number, since it uses less digits than its factorization.

20261793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29983.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20261793 is about 4501.3101426140. The cubic root of 20261793 is about 272.6209905163.

Adding to 20261793 its reverse (39716202), we get a palindrome (59977995).

The spelling of 20261793 in words is "twenty million, two hundred sixty-one thousand, seven hundred ninety-three".