28719250 has 32 divisors (see below), whose sum is σ = 61446528. Its totient is φ = 9846000.

The previous prime is 28719233. The next prime is 28719263. The reversal of 28719250 is 5291782.

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, 6456 + ... + 9955.

It is an arithmetic number, because the mean of its divisors is an integer number (1920204).

Almost surely, 2^28719250 is an apocalyptic number.

28719250 is an abundant number, since it is smaller than the sum of its proper divisors (32727278).

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

28719250 is a wasteful number, since it uses less digits than its factorization.

28719250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16435 (or 16425 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 28719250 is about 5359.0344279543. The cubic root of 28719250 is about 306.2370256894.

It can be divided in two parts, 2871 and 9250, that added together give a palindrome (12121).

The spelling of 28719250 in words is "twenty-eight million, seven hundred nineteen thousand, two hundred fifty".