20139026 has 16 divisors (see below), whose sum is σ = 32029440. Its totient is φ = 9480240.

The previous prime is 20139019. The next prime is 20139109. The reversal of 20139026 is 62093102.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20138992 and 20139010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (2001840).

Almost surely, 2^20139026 is an apocalyptic number.

20139026 is a deficient number, since it is larger than the sum of its proper divisors (11890414).

20139026 is a wasteful number, since it uses less digits than its factorization.

20139026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8849.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 20139026 is about 4487.6526157892. The cubic root of 20139026 is about 272.0692676097.

The spelling of 20139026 in words is "twenty million, one hundred thirty-nine thousand, twenty-six".