28814730 has 64 divisors (see below), whose sum is σ = 80898048. Its totient is φ = 6431040.

The previous prime is 28814701. The next prime is 28814743. The reversal of 28814730 is 3741882.

It is a junction number, because it is equal to n+sod(n) for n = 28814691 and 28814700.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7435 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (1264032).

Almost surely, 2^28814730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28814730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40449024).

28814730 is an abundant number, since it is smaller than the sum of its proper divisors (52083318).

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

28814730 is a wasteful number, since it uses less digits than its factorization.

28814730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28814730 is about 5367.9353572859. The cubic root of 28814730 is about 306.5760220967.

The spelling of 28814730 in words is "twenty-eight million, eight hundred fourteen thousand, seven hundred thirty".