20694738 has 16 divisors (see below), whose sum is σ = 42068736. Its totient is φ = 6785040.

The previous prime is 20694731. The next prime is 20694749. The reversal of 20694738 is 83749602.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20694696 and 20694705.

It is not an unprimeable number, because it can be changed into a prime (20694731) 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, 27906 + ... + 28637.

It is an arithmetic number, because the mean of its divisors is an integer number (2629296).

Almost surely, 2^20694738 is an apocalyptic number.

20694738 is an abundant number, since it is smaller than the sum of its proper divisors (21373998).

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

20694738 is a wasteful number, since it uses less digits than its factorization.

20694738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56609.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 20694738 is about 4549.1469530012. The cubic root of 20694738 is about 274.5490703613.

The spelling of 20694738 in words is "twenty million, six hundred ninety-four thousand, seven hundred thirty-eight".