15428321223 has 8 divisors (see below), whose sum is σ = 23509822848. Its totient is φ = 8816183544.

The previous prime is 15428321221. The next prime is 15428321257. The reversal of 15428321223 is 32212382451.

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

It is not a de Polignac number, because 15428321223 - 2¹ = 15428321221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15428321221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367340961 + ... + 367341002.

It is an arithmetic number, because the mean of its divisors is an integer number (2938727856).

Almost surely, 2^15428321223 is an apocalyptic number.

15428321223 is a deficient number, since it is larger than the sum of its proper divisors (8081501625).

15428321223 is an equidigital number, since it uses as much as digits as its factorization.

15428321223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734681973.

The product of its digits is 23040, while the sum is 33.

The spelling of 15428321223 in words is "fifteen billion, four hundred twenty-eight million, three hundred twenty-one thousand, two hundred twenty-three".