28896715 has 4 divisors (see below), whose sum is σ = 34676064. Its totient is φ = 23117368.

The previous prime is 28896697. The next prime is 28896727. The reversal of 28896715 is 51769882.

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

It is a cyclic number.

It is not a de Polignac number, because 28896715 - 2¹³ = 28888523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2889667 + ... + 2889676.

It is an arithmetic number, because the mean of its divisors is an integer number (8669016).

Almost surely, 2^28896715 is an apocalyptic number.

28896715 is a deficient number, since it is larger than the sum of its proper divisors (5779349).

28896715 is an equidigital number, since it uses as much as digits as its factorization.

28896715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5779348.

The product of its digits is 241920, while the sum is 46.

The square root of 28896715 is about 5375.5664817766. The cubic root of 28896715 is about 306.8665081861.

It can be divided in two parts, 2889 and 6715, that added together give a square (9604 = 98²).

The spelling of 28896715 in words is "twenty-eight million, eight hundred ninety-six thousand, seven hundred fifteen".