20078723 has 8 divisors (see below), whose sum is σ = 23262048. Its totient is φ = 16974144.

The previous prime is 20078693. The next prime is 20078741. The reversal of 20078723 is 32787002.

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

It is a cyclic number.

It is not a de Polignac number, because 20078723 - 2⁶ = 20078659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20078783) 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, 19136 + ... + 20157.

It is an arithmetic number, because the mean of its divisors is an integer number (2907756).

Almost surely, 2^20078723 is an apocalyptic number.

20078723 is a deficient number, since it is larger than the sum of its proper divisors (3183325).

20078723 is an equidigital number, since it uses as much as digits as its factorization.

20078723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39373.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 20078723 is about 4480.9288099679. The cubic root of 20078723 is about 271.7974405618.

The spelling of 20078723 in words is "twenty million, seventy-eight thousand, seven hundred twenty-three".