28339198 has 4 divisors (see below), whose sum is σ = 42508800. Its totient is φ = 14169598.

The previous prime is 28339189. The next prime is 28339211. The reversal of 28339198 is 89193382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28339198² = 1606220286566408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7084798 + ... + 7084801.

It is an arithmetic number, because the mean of its divisors is an integer number (10627200).

Almost surely, 2^28339198 is an apocalyptic number.

28339198 is a deficient number, since it is larger than the sum of its proper divisors (14169602).

28339198 is a wasteful number, since it uses less digits than its factorization.

28339198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14169601.

The product of its digits is 93312, while the sum is 43.

The square root of 28339198 is about 5323.4573352287. The cubic root of 28339198 is about 304.8801750932.

The spelling of 28339198 in words is "twenty-eight million, three hundred thirty-nine thousand, one hundred ninety-eight".