28719504399 has 8 divisors (see below), whose sum is σ = 38941701120. Its totient is φ = 18821821976.

The previous prime is 28719504371. The next prime is 28719504413. The reversal of 28719504399 is 99340591782.

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 28719504399 - 2¹⁶ = 28719438863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28719500399) 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, 81128367 + ... + 81128720.

It is an arithmetic number, because the mean of its divisors is an integer number (4867712640).

Almost surely, 2^28719504399 is an apocalyptic number.

28719504399 is a deficient number, since it is larger than the sum of its proper divisors (10222196721).

28719504399 is a wasteful number, since it uses less digits than its factorization.

28719504399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162257149.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 28719504399 in words is "twenty-eight billion, seven hundred nineteen million, five hundred four thousand, three hundred ninety-nine".