28864650 has 24 divisors (see below), whose sum is σ = 71584704. Its totient is φ = 7697200.

The previous prime is 28864631. The next prime is 28864663. The reversal of 28864650 is 5646882.

It is a junction number, because it is equal to n+sod(n) for n = 28864599 and 28864608.

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 11 ways as a sum of consecutive naturals, for example, 96066 + ... + 96365.

It is an arithmetic number, because the mean of its divisors is an integer number (2982696).

Almost surely, 2^28864650 is an apocalyptic number.

28864650 is an abundant number, since it is smaller than the sum of its proper divisors (42720054).

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

28864650 is a wasteful number, since it uses less digits than its factorization.

28864650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192446 (or 192441 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 28864650 is about 5372.5831775785. The cubic root of 28864650 is about 306.7529622192.

The spelling of 28864650 in words is "twenty-eight million, eight hundred sixty-four thousand, six hundred fifty".