20538694 has 16 divisors (see below), whose sum is σ = 33878016. Its totient is φ = 9261000.

The previous prime is 20538691. The next prime is 20538773. The reversal of 20538694 is 49683502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20538691) 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, 882 + ... + 6469.

It is an arithmetic number, because the mean of its divisors is an integer number (2117376).

Almost surely, 2^20538694 is an apocalyptic number.

20538694 is a deficient number, since it is larger than the sum of its proper divisors (13339322).

20538694 is a wasteful number, since it uses less digits than its factorization.

20538694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 20538694 is about 4531.9635920868. The cubic root of 20538694 is about 273.8572702208.

The spelling of 20538694 in words is "twenty million, five hundred thirty-eight thousand, six hundred ninety-four".