28695550 has 48 divisors (see below), whose sum is σ = 58090032. Its totient is φ = 10483200.

The previous prime is 28695539. The next prime is 28695551. The reversal of 28695550 is 5559682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28695551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84982 + ... + 85318.

It is an arithmetic number, because the mean of its divisors is an integer number (1210209).

Almost surely, 2^28695550 is an apocalyptic number.

28695550 is an abundant number, since it is smaller than the sum of its proper divisors (29394482).

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

28695550 is a wasteful number, since it uses less digits than its factorization.

28695550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 28695550 is about 5356.8227523412. The cubic root of 28695550 is about 306.1527637991.

The spelling of 28695550 in words is "twenty-eight million, six hundred ninety-five thousand, five hundred fifty".