28230270 has 16 divisors (see below), whose sum is σ = 67752720. Its totient is φ = 7528064.

The previous prime is 28230259. The next prime is 28230277. The reversal of 28230270 is 7203282.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28230270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230277) 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, 470475 + ... + 470534.

It is an arithmetic number, because the mean of its divisors is an integer number (4234545).

Almost surely, 2^28230270 is an apocalyptic number.

28230270 is an abundant number, since it is smaller than the sum of its proper divisors (39522450).

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

28230270 is a wasteful number, since it uses less digits than its factorization.

28230270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941019.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 28230270 is about 5313.2165399125. The cubic root of 28230270 is about 304.4890486542.

The spelling of 28230270 in words is "twenty-eight million, two hundred thirty thousand, two hundred seventy".