20712039 has 8 divisors (see below), whose sum is σ = 27722112. Its totient is φ = 13755000.

The previous prime is 20712037. The next prime is 20712053. The reversal of 20712039 is 93021702.

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

It is not a de Polignac number, because 20712039 - 2¹ = 20712037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20712037) 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, 12337 + ... + 13914.

It is an arithmetic number, because the mean of its divisors is an integer number (3465264).

Almost surely, 2^20712039 is an apocalyptic number.

20712039 is a deficient number, since it is larger than the sum of its proper divisors (7010073).

20712039 is a wasteful number, since it uses less digits than its factorization.

20712039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26517.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20712039 is about 4551.0481210376. The cubic root of 20712039 is about 274.6255576050.

It can be divided in two parts, 207 and 12039, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 20712039 in words is "twenty million, seven hundred twelve thousand, thirty-nine".