28879707 has 8 divisors (see below), whose sum is σ = 38534976. Its totient is φ = 19238792.

The previous prime is 28879691. The next prime is 28879709. The reversal of 28879707 is 70797882.

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 28879707 - 2⁴ = 28879691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28879709) 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, 2668 + ... + 8054.

It is an arithmetic number, because the mean of its divisors is an integer number (4816872).

Almost surely, 2^28879707 is an apocalyptic number.

28879707 is a deficient number, since it is larger than the sum of its proper divisors (9655269).

28879707 is a wasteful number, since it uses less digits than its factorization.

28879707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7177.

The product of its (nonzero) digits is 395136, while the sum is 48.

The square root of 28879707 is about 5373.9842761214. The cubic root of 28879707 is about 306.8062913082.

The spelling of 28879707 in words is "twenty-eight million, eight hundred seventy-nine thousand, seven hundred seven".