28787098 has 8 divisors (see below), whose sum is σ = 43470900. Its totient is φ = 14296800.

The previous prime is 28787051. The next prime is 28787117. The reversal of 28787098 is 89078782.

It can be written as a sum of positive squares in 2 ways, for example, as 27217089 + 1570009 = 5217^2 + 1253^2 .

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

It is a super-2 number, since 2×28787098² = 1657394022523208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48003 + ... + 48598.

Almost surely, 2^28787098 is an apocalyptic number.

28787098 is a deficient number, since it is larger than the sum of its proper divisors (14683802).

28787098 is a wasteful number, since it uses less digits than its factorization.

28787098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96752.

The product of its (nonzero) digits is 451584, while the sum is 49.

The square root of 28787098 is about 5365.3609384644. The cubic root of 28787098 is about 306.4779933229.

The spelling of 28787098 in words is "twenty-eight million, seven hundred eighty-seven thousand, ninety-eight".