20361939 has 16 divisors (see below), whose sum is σ = 30777600. Its totient is φ = 11870496.

The previous prime is 20361917. The next prime is 20361941. The reversal of 20361939 is 93916302.

It is not a de Polignac number, because 20361939 - 2¹¹ = 20359891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20361989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12999 + ... + 14480.

It is an arithmetic number, because the mean of its divisors is an integer number (1923600).

Almost surely, 2^20361939 is an apocalyptic number.

20361939 is a deficient number, since it is larger than the sum of its proper divisors (10415661).

20361939 is a wasteful number, since it uses less digits than its factorization.

20361939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27514.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 20361939 is about 4512.4205256159. The cubic root of 20361939 is about 273.0694049945.

The spelling of 20361939 in words is "twenty million, three hundred sixty-one thousand, nine hundred thirty-nine".