28249514 has 8 divisors (see below), whose sum is σ = 42397668. Its totient is φ = 14116960.

The previous prime is 28249489. The next prime is 28249517. The reversal of 28249514 is 41594282.

It can be written as a sum of positive squares in 2 ways, for example, as 28249225 + 289 = 5315^2 + 17^2 .

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 (28249517) 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, 3254 + ... + 8190.

Almost surely, 2^28249514 is an apocalyptic number.

28249514 is a deficient number, since it is larger than the sum of its proper divisors (14148154).

28249514 is a wasteful number, since it uses less digits than its factorization.

28249514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800.

The product of its digits is 23040, while the sum is 35.

The square root of 28249514 is about 5315.0271871365. The cubic root of 28249514 is about 304.5582209328.

The spelling of 28249514 in words is "twenty-eight million, two hundred forty-nine thousand, five hundred fourteen".