28603830 has 32 divisors (see below), whose sum is σ = 69097824. Its totient is φ = 7577856.

The previous prime is 28603823. The next prime is 28603847. The reversal of 28603830 is 3830682.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1674 + ... + 7746.

It is an arithmetic number, because the mean of its divisors is an integer number (2159307).

Almost surely, 2^28603830 is an apocalyptic number.

28603830 is an abundant number, since it is smaller than the sum of its proper divisors (40493994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28603830 is a wasteful number, since it uses less digits than its factorization.

28603830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28603830 is about 5348.2548555580. The cubic root of 28603830 is about 305.8262288184.

The spelling of 28603830 in words is "twenty-eight million, six hundred three thousand, eight hundred thirty".