28630615 has 8 divisors (see below), whose sum is σ = 36999648. Its totient is φ = 21142560.

The previous prime is 28630597. The next prime is 28630619. The reversal of 28630615 is 51603682.

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

It is not a de Polignac number, because 28630615 - 2⁵ = 28630583 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 (28630619) 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, 220171 + ... + 220300.

It is an arithmetic number, because the mean of its divisors is an integer number (4624956).

Almost surely, 2^28630615 is an apocalyptic number.

28630615 is a deficient number, since it is larger than the sum of its proper divisors (8369033).

28630615 is a wasteful number, since it uses less digits than its factorization.

28630615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440489.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28630615 is about 5350.7583574667. The cubic root of 28630615 is about 305.9216589290.

The spelling of 28630615 in words is "twenty-eight million, six hundred thirty thousand, six hundred fifteen".