28296615 has 16 divisors (see below), whose sum is σ = 45849600. Its totient is φ = 14899872.

The previous prime is 28296607. The next prime is 28296617. The reversal of 28296615 is 51669282.

It is not a de Polignac number, because 28296615 - 2³ = 28296607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28296617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10755 + ... + 13124.

It is an arithmetic number, because the mean of its divisors is an integer number (2865600).

Almost surely, 2^28296615 is an apocalyptic number.

28296615 is a deficient number, since it is larger than the sum of its proper divisors (17552985).

28296615 is a wasteful number, since it uses less digits than its factorization.

28296615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23966.

The product of its digits is 51840, while the sum is 39.

The square root of 28296615 is about 5319.4562692065. The cubic root of 28296615 is about 304.7273923573.

The spelling of 28296615 in words is "twenty-eight million, two hundred ninety-six thousand, six hundred fifteen".