28705150 has 48 divisors (see below), whose sum is σ = 56469600. Its totient is φ = 10834560.

The previous prime is 28705147. The next prime is 28705151. The reversal of 28705150 is 5150782.

28705150 = 175² + 176² + ... + 450².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28705151) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 125236 + ... + 125464.

It is an arithmetic number, because the mean of its divisors is an integer number (1176450).

Almost surely, 2^28705150 is an apocalyptic number.

28705150 is a deficient number, since it is larger than the sum of its proper divisors (27764450).

28705150 is a wasteful number, since it uses less digits than its factorization.

28705150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 28705150 is about 5357.7187309526. The cubic root of 28705150 is about 306.1869007860.

The spelling of 28705150 in words is "twenty-eight million, seven hundred five thousand, one hundred fifty".