28190074 has 8 divisors (see below), whose sum is σ = 46129248. Its totient is φ = 12813660.

The previous prime is 28190051. The next prime is 28190077. The reversal of 28190074 is 47009182.

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

It is not an unprimeable number, because it can be changed into a prime (28190077) 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, 640662 + ... + 640705.

It is an arithmetic number, because the mean of its divisors is an integer number (5766156).

Almost surely, 2^28190074 is an apocalyptic number.

28190074 is a deficient number, since it is larger than the sum of its proper divisors (17939174).

28190074 is a wasteful number, since it uses less digits than its factorization.

28190074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281380.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 28190074 is about 5309.4325497175. The cubic root of 28190074 is about 304.3444632453.

The spelling of 28190074 in words is "twenty-eight million, one hundred ninety thousand, seventy-four".