28716090979 has 8 divisors (see below), whose sum is σ = 29499562640. Its totient is φ = 27933006816.

The previous prime is 28716090943. The next prime is 28716091003. The reversal of 28716090979 is 97909061782.

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 not a de Polignac number, because 28716090979 - 2⁹ = 28716090467 is a prime.

It is a super-2 number, since 2×28716090979² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28716097979) 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, 56632 + ... + 246250.

It is an arithmetic number, because the mean of its divisors is an integer number (3687445330).

Almost surely, 2^28716090979 is an apocalyptic number.

28716090979 is a deficient number, since it is larger than the sum of its proper divisors (783471661).

28716090979 is a wasteful number, since it uses less digits than its factorization.

28716090979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193749.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 28716090979 in words is "twenty-eight billion, seven hundred sixteen million, ninety thousand, nine hundred seventy-nine".