28998079 has 8 divisors (see below), whose sum is σ = 31721472. Its totient is φ = 26289240.

The previous prime is 28998077. The next prime is 28998083. The reversal of 28998079 is 97089982.

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 28998079 - 2¹ = 28998077 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 (28998077) 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, 772 + ... + 7654.

It is an arithmetic number, because the mean of its divisors is an integer number (3965184).

Almost surely, 2^28998079 is an apocalyptic number.

28998079 is a deficient number, since it is larger than the sum of its proper divisors (2723393).

28998079 is a wasteful number, since it uses less digits than its factorization.

28998079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7277.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 28998079 is about 5384.9864438084. The cubic root of 28998079 is about 307.2248986020.

The spelling of 28998079 in words is "twenty-eight million, nine hundred ninety-eight thousand, seventy-nine".