20646794 has 16 divisors (see below), whose sum is σ = 36218688. Its totient is φ = 8642592.

The previous prime is 20646763. The next prime is 20646797. The reversal of 20646794 is 49764602.

It is a super-3 number, since 3×20646794³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20646797) 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, 16547 + ... + 17750.

It is an arithmetic number, because the mean of its divisors is an integer number (2263668).

Almost surely, 2^20646794 is an apocalyptic number.

20646794 is a deficient number, since it is larger than the sum of its proper divisors (15571894).

20646794 is a wasteful number, since it uses less digits than its factorization.

20646794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34349.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 20646794 is about 4543.8743380512. The cubic root of 20646794 is about 274.3368882641.

The spelling of 20646794 in words is "twenty million, six hundred forty-six thousand, seven hundred ninety-four".