28064750 has 96 divisors (see below), whose sum is σ = 64022400. Its totient is φ = 9172800.

The previous prime is 28064749. The next prime is 28064789. The reversal of 28064750 is 5746082.

It is a super-3 number, since 3×28064750³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 355211 + ... + 355289.

It is an arithmetic number, because the mean of its divisors is an integer number (666900).

Almost surely, 2^28064750 is an apocalyptic number.

28064750 is an abundant number, since it is smaller than the sum of its proper divisors (35957650).

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

28064750 is a wasteful number, since it uses less digits than its factorization.

28064750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 28064750 is about 5297.6173889778. The cubic root of 28064750 is about 303.8927873897.

The spelling of 28064750 in words is "twenty-eight million, sixty-four thousand, seven hundred fifty".