28661092 has 6 divisors (see below), whose sum is σ = 50156918. Its totient is φ = 14330544.

The previous prime is 28661071. The next prime is 28661107. The reversal of 28661092 is 29016682.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27206656 + 1454436 = 5216^2 + 1206^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3582633 + ... + 3582640.

Almost surely, 2^28661092 is an apocalyptic number.

It is an amenable number.

28661092 is a deficient number, since it is larger than the sum of its proper divisors (21495826).

28661092 is a wasteful number, since it uses less digits than its factorization.

28661092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165277 (or 7165275 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 28661092 is about 5353.6055140438. The cubic root of 28661092 is about 306.0301706051.

The spelling of 28661092 in words is "twenty-eight million, six hundred sixty-one thousand, ninety-two".