28692244 has 18 divisors (see below), whose sum is σ = 58409610. Its totient is φ = 12296592.

The previous prime is 28692229. The next prime is 28692253. The reversal of 28692244 is 44229682.

It can be written as a sum of positive squares in only one way, i.e., 25120144 + 3572100 = 5012^2 + 1890^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72999 + ... + 73390.

Almost surely, 2^28692244 is an apocalyptic number.

It is an amenable number.

28692244 is an abundant number, since it is smaller than the sum of its proper divisors (29717366).

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

28692244 is a wasteful number, since it uses less digits than its factorization.

28692244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146407 (or 146398 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 28692244 is about 5356.5141650144. The cubic root of 28692244 is about 306.1410061118.

The spelling of 28692244 in words is "twenty-eight million, six hundred ninety-two thousand, two hundred forty-four".