28247415 has 16 divisors (see below), whose sum is σ = 51652608. Its totient is φ = 12913056.

The previous prime is 28247407. The next prime is 28247447. The reversal of 28247415 is 51474282.

It is not a de Polignac number, because 28247415 - 2³ = 28247407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134407 + ... + 134616.

It is an arithmetic number, because the mean of its divisors is an integer number (3228288).

Almost surely, 2^28247415 is an apocalyptic number.

28247415 is a deficient number, since it is larger than the sum of its proper divisors (23405193).

28247415 is a wasteful number, since it uses less digits than its factorization.

28247415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269038.

The product of its digits is 17920, while the sum is 33.

The square root of 28247415 is about 5314.8297244597. The cubic root of 28247415 is about 304.5506776344.

The spelling of 28247415 in words is "twenty-eight million, two hundred forty-seven thousand, four hundred fifteen".