28515331029 has 8 divisors (see below), whose sum is σ = 38541269632. Its totient is φ = 18749806560.

The previous prime is 28515331001. The next prime is 28515331067. The reversal of 28515331029 is 92013351582.

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

It is not a de Polignac number, because 28515331029 - 2²³ = 28506942421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28515331129) 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, 65103277 + ... + 65103714.

It is an arithmetic number, because the mean of its divisors is an integer number (4817658704).

Almost surely, 2^28515331029 is an apocalyptic number.

It is an amenable number.

28515331029 is a deficient number, since it is larger than the sum of its proper divisors (10025938603).

28515331029 is a wasteful number, since it uses less digits than its factorization.

28515331029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130207067.

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 28515331029 in words is "twenty-eight billion, five hundred fifteen million, three hundred thirty-one thousand, twenty-nine".