20079307 has 4 divisors (see below), whose sum is σ = 20354440. Its totient is φ = 19804176.

The previous prime is 20079259. The next prime is 20079313. The reversal of 20079307 is 70397002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20079307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20079337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137457 + ... + 137602.

It is an arithmetic number, because the mean of its divisors is an integer number (5088610).

Almost surely, 2^20079307 is an apocalyptic number.

20079307 is a deficient number, since it is larger than the sum of its proper divisors (275133).

20079307 is an equidigital number, since it uses as much as digits as its factorization.

20079307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275132.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 20079307 is about 4480.9939745552. The cubic root of 20079307 is about 271.8000756591.

Adding to 20079307 its product of nonzero digits (2646), we get a triangular number (20081953 = T₆₃₃₇).

It can be divided in two parts, 200 and 79307, that added together give a cube (79507 = 43³).

The spelling of 20079307 in words is "twenty million, seventy-nine thousand, three hundred seven".