28881674 has 8 divisors (see below), whose sum is σ = 45870948. Its totient is φ = 13591360.

The previous prime is 28881673. The next prime is 28881679. The reversal of 28881674 is 47618882.

It can be written as a sum of positive squares in 2 ways, for example, as 23088025 + 5793649 = 4805^2 + 2407^2 .

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 (28881673) 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, 424697 + ... + 424764.

Almost surely, 2^28881674 is an apocalyptic number.

28881674 is a deficient number, since it is larger than the sum of its proper divisors (16989274).

28881674 is a wasteful number, since it uses less digits than its factorization.

28881674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849480.

The product of its digits is 172032, while the sum is 44.

The square root of 28881674 is about 5374.1672843335. The cubic root of 28881674 is about 306.8132566868.

The spelling of 28881674 in words is "twenty-eight million, eight hundred eighty-one thousand, six hundred seventy-four".