20923694 has 16 divisors (see below), whose sum is σ = 35075376. Its totient is φ = 9278400.

The previous prime is 20923691. The next prime is 20923697. The reversal of 20923694 is 49632902.

It is an interprime number because it is at equal distance from previous prime (20923691) and next prime (20923697).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20923691) 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, 10697 + ... + 12500.

It is an arithmetic number, because the mean of its divisors is an integer number (2192211).

Almost surely, 2^20923694 is an apocalyptic number.

20923694 is a deficient number, since it is larger than the sum of its proper divisors (14151682).

20923694 is a wasteful number, since it uses less digits than its factorization.

20923694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23251.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 20923694 is about 4574.2424509420. The cubic root of 20923694 is about 275.5578494312.

The spelling of 20923694 in words is "twenty million, nine hundred twenty-three thousand, six hundred ninety-four".