28044249929 has 8 divisors (see below), whose sum is σ = 29013216960. Its totient is φ = 27075411216.

The previous prime is 28044249839. The next prime is 28044249967. The reversal of 28044249929 is 92994244082.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28044249929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28044249979) 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, 683222 + ... + 723104.

It is an arithmetic number, because the mean of its divisors is an integer number (3626652120).

Almost surely, 2^28044249929 is an apocalyptic number.

28044249929 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28044249929 is a deficient number, since it is larger than the sum of its proper divisors (968967031).

28044249929 is a wasteful number, since it uses less digits than its factorization.

28044249929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64159.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 28044249929 in words is "twenty-eight billion, forty-four million, two hundred forty-nine thousand, nine hundred twenty-nine".