28633615 has 8 divisors (see below), whose sum is σ = 35468928. Its totient is φ = 22167840.

The previous prime is 28633613. The next prime is 28633637. The reversal of 28633615 is 51633682.

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

It is not a de Polignac number, because 28633615 - 2¹ = 28633613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28633613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92212 + ... + 92521.

It is an arithmetic number, because the mean of its divisors is an integer number (4433616).

Almost surely, 2^28633615 is an apocalyptic number.

28633615 is a deficient number, since it is larger than the sum of its proper divisors (6835313).

28633615 is a wasteful number, since it uses less digits than its factorization.

28633615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184769.

The product of its digits is 25920, while the sum is 34.

The square root of 28633615 is about 5351.0386842182. The cubic root of 28633615 is about 305.9323436793.

The spelling of 28633615 in words is "twenty-eight million, six hundred thirty-three thousand, six hundred fifteen".