28757752 has 8 divisors (see below), whose sum is σ = 53920800. Its totient is φ = 14378872.

The previous prime is 28757741. The next prime is 28757777. The reversal of 28757752 is 25775782.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28757699 and 28757708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1797352 + ... + 1797367.

It is an arithmetic number, because the mean of its divisors is an integer number (6740100).

Almost surely, 2^28757752 is an apocalyptic number.

It is an amenable number.

28757752 is a deficient number, since it is larger than the sum of its proper divisors (25163048).

28757752 is a wasteful number, since it uses less digits than its factorization.

28757752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594725 (or 3594721 counting only the distinct ones).

The product of its digits is 274400, while the sum is 43.

The square root of 28757752 is about 5362.6254763875. The cubic root of 28757752 is about 306.3738151583.

The spelling of 28757752 in words is "twenty-eight million, seven hundred fifty-seven thousand, seven hundred fifty-two".