28094380 has 24 divisors (see below), whose sum is σ = 59220000. Its totient is φ = 11195520.

The previous prime is 28094371. The next prime is 28094393. The reversal of 28094380 is 8349082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3121 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (2467500).

Almost surely, 2^28094380 is an apocalyptic number.

28094380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28094380 is an abundant number, since it is smaller than the sum of its proper divisors (31125620).

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

28094380 is a wasteful number, since it uses less digits than its factorization.

28094380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289 (or 5287 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28094380 is about 5300.4131914408. The cubic root of 28094380 is about 303.9996970219. Note that the first 3 decimals are identical.

The spelling of 28094380 in words is "twenty-eight million, ninety-four thousand, three hundred eighty".