28406679 has 32 divisors (see below), whose sum is σ = 45686784. Its totient is φ = 15348960.

The previous prime is 28406647. The next prime is 28406699. The reversal of 28406679 is 97660482.

It is not a de Polignac number, because 28406679 - 2⁵ = 28406647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28406679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28406629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49464 + ... + 50034.

It is an arithmetic number, because the mean of its divisors is an integer number (1427712).

Almost surely, 2^28406679 is an apocalyptic number.

28406679 is a deficient number, since it is larger than the sum of its proper divisors (17280105).

28406679 is a wasteful number, since it uses less digits than its factorization.

28406679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 28406679 is about 5329.7916469596. The cubic root of 28406679 is about 305.1219757583.

The spelling of 28406679 in words is "twenty-eight million, four hundred six thousand, six hundred seventy-nine".