28477679 has 8 divisors (see below), whose sum is σ = 29352720. Its totient is φ = 27608256.

The previous prime is 28477651. The next prime is 28477693. The reversal of 28477679 is 97677482.

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 28477679 - 2¹⁶ = 28412143 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 (28477619) 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, 10352 + ... + 12810.

It is an arithmetic number, because the mean of its divisors is an integer number (3669090).

Almost surely, 2^28477679 is an apocalyptic number.

28477679 is a deficient number, since it is larger than the sum of its proper divisors (875041).

28477679 is a wasteful number, since it uses less digits than its factorization.

28477679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809.

The product of its digits is 1185408, while the sum is 50.

The square root of 28477679 is about 5336.4481633386. The cubic root of 28477679 is about 305.3759727906.

The spelling of 28477679 in words is "twenty-eight million, four hundred seventy-seven thousand, six hundred seventy-nine".