28714280 has 32 divisors (see below), whose sum is σ = 73837440. Its totient is φ = 9844800.

The previous prime is 28714271. The next prime is 28714289. The reversal of 28714280 is 8241782.

It is an interprime number because it is at equal distance from previous prime (28714271) and next prime (28714289).

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28714289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50996 + ... + 51555.

It is an arithmetic number, because the mean of its divisors is an integer number (2307420).

Almost surely, 2^28714280 is an apocalyptic number.

28714280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28714280 is an abundant number, since it is smaller than the sum of its proper divisors (45123160).

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

28714280 is a wasteful number, since it uses less digits than its factorization.

28714280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102569 (or 102565 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 28714280 is about 5358.5707049548. The cubic root of 28714280 is about 306.2193594223.

The spelling of 28714280 in words is "twenty-eight million, seven hundred fourteen thousand, two hundred eighty".