28227490 has 16 divisors (see below), whose sum is σ = 51454080. Its totient is φ = 11147760.

The previous prime is 28227481. The next prime is 28227499. The reversal of 28227490 is 9472282.

It is an interprime number because it is at equal distance from previous prime (28227481) and next prime (28227499).

It is not an unprimeable number, because it can be changed into a prime (28227499) 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, 17076 + ... + 18655.

It is an arithmetic number, because the mean of its divisors is an integer number (3215880).

Almost surely, 2^28227490 is an apocalyptic number.

28227490 is a deficient number, since it is larger than the sum of its proper divisors (23226590).

28227490 is a wasteful number, since it uses less digits than its factorization.

28227490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35817.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28227490 is about 5312.9549216985. The cubic root of 28227490 is about 304.4790533862.

It can be divided in two parts, 282 and 27490, that added together give a palindrome (27772).

The spelling of 28227490 in words is "twenty-eight million, two hundred twenty-seven thousand, four hundred ninety".