28298415 has 8 divisors (see below), whose sum is σ = 45277488. Its totient is φ = 15092480.

The previous prime is 28298407. The next prime is 28298419. The reversal of 28298415 is 51489282.

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

It is not a de Polignac number, because 28298415 - 2³ = 28298407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28298419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943266 + ... + 943295.

It is an arithmetic number, because the mean of its divisors is an integer number (5659686).

Almost surely, 2^28298415 is an apocalyptic number.

28298415 is a deficient number, since it is larger than the sum of its proper divisors (16979073).

28298415 is a wasteful number, since it uses less digits than its factorization.

28298415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886569.

The product of its digits is 46080, while the sum is 39.

The square root of 28298415 is about 5319.6254567404. The cubic root of 28298415 is about 304.7338536445.

The spelling of 28298415 in words is "twenty-eight million, two hundred ninety-eight thousand, four hundred fifteen".