28320092 has 12 divisors (see below), whose sum is σ = 49922880. Its totient is φ = 14056416.

The previous prime is 28320091. The next prime is 28320119. The reversal of 28320092 is 29002382.

It is a super-2 number, since 2×28320092² = 1604055221776928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28320091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25292 + ... + 26387.

It is an arithmetic number, because the mean of its divisors is an integer number (4160240).

Almost surely, 2^28320092 is an apocalyptic number.

It is an amenable number.

28320092 is a deficient number, since it is larger than the sum of its proper divisors (21602788).

28320092 is a wasteful number, since it uses less digits than its factorization.

28320092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51820 (or 51818 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 28320092 is about 5321.6625221823. The cubic root of 28320092 is about 304.8116439822.

The spelling of 28320092 in words is "twenty-eight million, three hundred twenty thousand, ninety-two".