28374418 has 8 divisors (see below), whose sum is σ = 42596748. Its totient is φ = 14175504.

The previous prime is 28374407. The next prime is 28374421. The reversal of 28374418 is 81447382.

It can be written as a sum of positive squares in 2 ways, for example, as 22724289 + 5650129 = 4767^2 + 2377^2 .

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

It is a super-3 number, since 3×28374418³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

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, 2421 + ... + 7912.

Almost surely, 2^28374418 is an apocalyptic number.

28374418 is a deficient number, since it is larger than the sum of its proper divisors (14222330).

28374418 is a wasteful number, since it uses less digits than its factorization.

28374418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11708.

The product of its digits is 43008, while the sum is 37.

The square root of 28374418 is about 5326.7643086587. The cubic root of 28374418 is about 305.0064246609.

The spelling of 28374418 in words is "twenty-eight million, three hundred seventy-four thousand, four hundred eighteen".