28873605 has 16 divisors (see below), whose sum is σ = 47070720. Its totient is φ = 15108288.

The previous prime is 28873601. The next prime is 28873609. The reversal of 28873605 is 50637882.

It is an interprime number because it is at equal distance from previous prime (28873601) and next prime (28873609).

It is not a de Polignac number, because 28873605 - 2² = 28873601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28873601) 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, 17365 + ... + 18954.

It is an arithmetic number, because the mean of its divisors is an integer number (2941920).

Almost surely, 2^28873605 is an apocalyptic number.

It is an amenable number.

28873605 is a deficient number, since it is larger than the sum of its proper divisors (18197115).

28873605 is a wasteful number, since it uses less digits than its factorization.

28873605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36380.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28873605 is about 5373.4165109360. The cubic root of 28873605 is about 306.7846813953.

The spelling of 28873605 in words is "twenty-eight million, eight hundred seventy-three thousand, six hundred five".