28329898 has 8 divisors (see below), whose sum is σ = 42649092. Its totient is φ = 14113536.

The previous prime is 28329883. The next prime is 28329907. The reversal of 28329898 is 89892382.

It can be written as a sum of positive squares in 2 ways, for example, as 28164249 + 165649 = 5307^2 + 407^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25015 + ... + 26122.

Almost surely, 2^28329898 is an apocalyptic number.

28329898 is a deficient number, since it is larger than the sum of its proper divisors (14319194).

28329898 is a wasteful number, since it uses less digits than its factorization.

28329898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51416.

The product of its digits is 497664, while the sum is 49.

The square root of 28329898 is about 5322.5837710646. The cubic root of 28329898 is about 304.8468208696.

The spelling of 28329898 in words is "twenty-eight million, three hundred twenty-nine thousand, eight hundred ninety-eight".