28156650423 has 8 divisors (see below), whose sum is σ = 40955127936. Its totient is φ = 17064636600.

The previous prime is 28156650383. The next prime is 28156650433. The reversal of 28156650423 is 32405665182.

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

It is not a de Polignac number, because 28156650423 - 2⁶ = 28156650359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28156650433) 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, 426615883 + ... + 426615948.

It is an arithmetic number, because the mean of its divisors is an integer number (5119390992).

Almost surely, 2^28156650423 is an apocalyptic number.

28156650423 is a deficient number, since it is larger than the sum of its proper divisors (12798477513).

28156650423 is a wasteful number, since it uses less digits than its factorization.

28156650423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853231845.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 28156650423 in words is "twenty-eight billion, one hundred fifty-six million, six hundred fifty thousand, four hundred twenty-three".