28649198 has 4 divisors (see below), whose sum is σ = 42973800. Its totient is φ = 14324598.

The previous prime is 28649183. The next prime is 28649221. The reversal of 28649198 is 89194682.

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

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, 7162298 + ... + 7162301.

It is an arithmetic number, because the mean of its divisors is an integer number (10743450).

Almost surely, 2^28649198 is an apocalyptic number.

28649198 is a deficient number, since it is larger than the sum of its proper divisors (14324602).

28649198 is a wasteful number, since it uses less digits than its factorization.

28649198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14324601.

The product of its digits is 248832, while the sum is 47.

The square root of 28649198 is about 5352.4945586147. The cubic root of 28649198 is about 305.9878318313.

The spelling of 28649198 in words is "twenty-eight million, six hundred forty-nine thousand, one hundred ninety-eight".