28097750 has 32 divisors (see below), whose sum is σ = 52992576. Its totient is φ = 11155200.

The previous prime is 28097737. The next prime is 28097761. The reversal of 28097750 is 5779082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41414 + ... + 42086.

It is an arithmetic number, because the mean of its divisors is an integer number (1656018).

Almost surely, 2^28097750 is an apocalyptic number.

28097750 is a deficient number, since it is larger than the sum of its proper divisors (24894826).

28097750 is a wasteful number, since it uses less digits than its factorization.

28097750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 28097750 is about 5300.7310816528. The cubic root of 28097750 is about 304.0118517425.

The spelling of 28097750 in words is "twenty-eight million, ninety-seven thousand, seven hundred fifty".