28097315 has 8 divisors (see below), whose sum is σ = 34804608. Its totient is φ = 21752640.

The previous prime is 28097287. The next prime is 28097323. The reversal of 28097315 is 51379082.

28097315 = 503² + 504² + ... + 595².

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

It is not a de Polignac number, because 28097315 - 2⁸ = 28097059 is a prime.

It is a super-2 number, since 2×28097315² = 1578918220418450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90482 + ... + 90791.

It is an arithmetic number, because the mean of its divisors is an integer number (4350576).

Almost surely, 2^28097315 is an apocalyptic number.

28097315 is a deficient number, since it is larger than the sum of its proper divisors (6707293).

28097315 is a wasteful number, since it uses less digits than its factorization.

28097315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181309.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28097315 is about 5300.6900494181. The cubic root of 28097315 is about 304.0102828643.

The spelling of 28097315 in words is "twenty-eight million, ninety-seven thousand, three hundred fifteen".