28582270 has 32 divisors (see below), whose sum is σ = 57348000. Its totient is φ = 10192896.

The previous prime is 28582259. The next prime is 28582273. The reversal of 28582270 is 7228582.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28582273) 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 15 ways as a sum of consecutive naturals, for example, 1195 + ... + 7654.

It is an arithmetic number, because the mean of its divisors is an integer number (1792125).

Almost surely, 2^28582270 is an apocalyptic number.

28582270 is an abundant number, since it is smaller than the sum of its proper divisors (28765730).

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

28582270 is a wasteful number, since it uses less digits than its factorization.

28582270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8892.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 28582270 is about 5346.2388648469. The cubic root of 28582270 is about 305.7493711526.

The spelling of 28582270 in words is "twenty-eight million, five hundred eighty-two thousand, two hundred seventy".