28979007 has 8 divisors (see below), whose sum is σ = 38697984. Its totient is φ = 19289688.

The previous prime is 28978993. The next prime is 28979051. The reversal of 28979007 is 70097982.

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

It is not a de Polignac number, because 28979007 - 2⁴ = 28978991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28979007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28979107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5023 + ... + 9120.

It is an arithmetic number, because the mean of its divisors is an integer number (4837248).

Almost surely, 2^28979007 is an apocalyptic number.

28979007 is a deficient number, since it is larger than the sum of its proper divisors (9718977).

28979007 is a wasteful number, since it uses less digits than its factorization.

28979007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14829.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 28979007 is about 5383.2153031437. The cubic root of 28979007 is about 307.1575300209.

The spelling of 28979007 in words is "twenty-eight million, nine hundred seventy-nine thousand, seven".