28583130 has 16 divisors (see below), whose sum is σ = 68599584. Its totient is φ = 7622160.

The previous prime is 28583123. The next prime is 28583131. The reversal of 28583130 is 3138582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 952771 = 28583130 / (2 + 8 + 5 + 8 + 3 + 1 + 3 + 0).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28583131) 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, 476356 + ... + 476415.

It is an arithmetic number, because the mean of its divisors is an integer number (4287474).

Almost surely, 2^28583130 is an apocalyptic number.

28583130 is an abundant number, since it is smaller than the sum of its proper divisors (40016454).

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

28583130 is a wasteful number, since it uses less digits than its factorization.

28583130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952781.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28583130 is about 5346.3192946176. The cubic root of 28583130 is about 305.7524376436.

The spelling of 28583130 in words is "twenty-eight million, five hundred eighty-three thousand, one hundred thirty".