20290694 has 8 divisors (see below), whose sum is σ = 30595968. Its totient is φ = 10092040.

The previous prime is 20290693. The next prime is 20290747. The reversal of 20290694 is 49609202.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20290694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20290693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26177 + ... + 26940.

It is an arithmetic number, because the mean of its divisors is an integer number (3824496).

Almost surely, 2^20290694 is an apocalyptic number.

20290694 is a deficient number, since it is larger than the sum of its proper divisors (10305274).

20290694 is a wasteful number, since it uses less digits than its factorization.

20290694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53310.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20290694 is about 4504.5192862280. The cubic root of 20290694 is about 272.7505492389.

Adding to 20290694 its reverse (49609202), we get a palindrome (69899896).

The spelling of 20290694 in words is "twenty million, two hundred ninety thousand, six hundred ninety-four".