28374279 has 4 divisors (see below), whose sum is σ = 37832376. Its totient is φ = 18916184.

The previous prime is 28374271. The next prime is 28374287. The reversal of 28374279 is 97247382.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28374271) and next prime (28374287).

It is a cyclic number.

It is not a de Polignac number, because 28374279 - 2³ = 28374271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28374279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28374271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4729044 + ... + 4729049.

It is an arithmetic number, because the mean of its divisors is an integer number (9458094).

Almost surely, 2^28374279 is an apocalyptic number.

28374279 is a deficient number, since it is larger than the sum of its proper divisors (9458097).

28374279 is an equidigital number, since it uses as much as digits as its factorization.

28374279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9458096.

The product of its digits is 169344, while the sum is 42.

The square root of 28374279 is about 5326.7512613224. The cubic root of 28374279 is about 305.0059266070.

The spelling of 28374279 in words is "twenty-eight million, three hundred seventy-four thousand, two hundred seventy-nine".