28179974 has 8 divisors (see below), whose sum is σ = 42330288. Its totient is φ = 14069880.

The previous prime is 28179973. The next prime is 28179979. The reversal of 28179974 is 47997182.

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

It is a super-2 number, since 2×28179974² = 1588221869281352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28179973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8237 + ... + 11144.

It is an arithmetic number, because the mean of its divisors is an integer number (5291286).

Almost surely, 2^28179974 is an apocalyptic number.

28179974 is a deficient number, since it is larger than the sum of its proper divisors (14150314).

28179974 is a wasteful number, since it uses less digits than its factorization.

28179974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20110.

The product of its digits is 254016, while the sum is 47.

The square root of 28179974 is about 5308.4813270840. The cubic root of 28179974 is about 304.3081118419.

The spelling of 28179974 in words is "twenty-eight million, one hundred seventy-nine thousand, nine hundred seventy-four".