28423723307 has 4 divisors (see below), whose sum is σ = 32484255216. Its totient is φ = 24363191400.

The previous prime is 28423723259. The next prime is 28423723319. The reversal of 28423723307 is 70332732482.

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

It is a cyclic number.

It is not a de Polignac number, because 28423723307 - 2²⁴ = 28406946091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28423723327) 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, 2030265944 + ... + 2030265957.

It is an arithmetic number, because the mean of its divisors is an integer number (8121063804).

Almost surely, 2^28423723307 is an apocalyptic number.

28423723307 is a deficient number, since it is larger than the sum of its proper divisors (4060531909).

28423723307 is an equidigital number, since it uses as much as digits as its factorization.

28423723307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060531908.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 28423723307 in words is "twenty-eight billion, four hundred twenty-three million, seven hundred twenty-three thousand, three hundred seven".