28063992 has 32 divisors (see below), whose sum is σ = 76538880. Its totient is φ = 8504160.

The previous prime is 28063951. The next prime is 28064009. The reversal of 28063992 is 29936082.

It is a self number, because there is not a number n which added to its sum of digits gives 28063992.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 52888 + ... + 53415.

It is an arithmetic number, because the mean of its divisors is an integer number (2391840).

Almost surely, 2^28063992 is an apocalyptic number.

28063992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28063992 is an abundant number, since it is smaller than the sum of its proper divisors (48474888).

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

28063992 is a wasteful number, since it uses less digits than its factorization.

28063992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106323 (or 106319 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 28063992 is about 5297.5458468993. The cubic root of 28063992 is about 303.8900514213.

The spelling of 28063992 in words is "twenty-eight million, sixty-three thousand, nine hundred ninety-two".