28532830 has 16 divisors (see below), whose sum is σ = 51554880. Its totient is φ = 11369632.

The previous prime is 28532797. The next prime is 28532831. The reversal of 28532830 is 3823582.

It is a junction number, because it is equal to n+sod(n) for n = 28532792 and 28532801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28532831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2614 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (3222180).

Almost surely, 2^28532830 is an apocalyptic number.

28532830 is a deficient number, since it is larger than the sum of its proper divisors (23022050).

28532830 is a wasteful number, since it uses less digits than its factorization.

28532830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10883.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 28532830 is about 5341.6130522530. The cubic root of 28532830 is about 305.5729800654.

The spelling of 28532830 in words is "twenty-eight million, five hundred thirty-two thousand, eight hundred thirty".