28127332 has 24 divisors (see below), whose sum is σ = 52113600. Its totient is φ = 13260576.

The previous prime is 28127327. The next prime is 28127357. The reversal of 28127332 is 23372182.

It is a super-2 number, since 2×28127332² = 1582293610876448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28127332.

It is an unprimeable number.

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, 2169 + ... + 7807.

It is an arithmetic number, because the mean of its divisors is an integer number (2171400).

Almost surely, 2^28127332 is an apocalyptic number.

It is an amenable number.

28127332 is a deficient number, since it is larger than the sum of its proper divisors (23986268).

28127332 is a wasteful number, since it uses less digits than its factorization.

28127332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5715 (or 5713 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 28127332 is about 5303.5207174103. The cubic root of 28127332 is about 304.1185046990.

The spelling of 28127332 in words is "twenty-eight million, one hundred twenty-seven thousand, three hundred thirty-two".