28892628 has 18 divisors (see below), whose sum is σ = 73034234. Its totient is φ = 9630864.

The previous prime is 28892587. The next prime is 28892629. The reversal of 28892628 is 82629882.

It can be written as a sum of positive squares in only one way, i.e., 28005264 + 887364 = 5292^2 + 942^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28892629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401251 + ... + 401322.

Almost surely, 2^28892628 is an apocalyptic number.

It is an amenable number.

28892628 is an abundant number, since it is smaller than the sum of its proper divisors (44141606).

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

28892628 is a wasteful number, since it uses less digits than its factorization.

28892628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802583 (or 802578 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 28892628 is about 5375.1863223520. The cubic root of 28892628 is about 306.8520403069.

The spelling of 28892628 in words is "twenty-eight million, eight hundred ninety-two thousand, six hundred twenty-eight".