28528361004 has 48 divisors (see below), whose sum is σ = 78203623680. Its totient is φ = 7979960640.

The previous prime is 28528360981. The next prime is 28528361009. The reversal of 28528361004 is 40016382582.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (28528361009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8310744 + ... + 8314175.

It is an arithmetic number, because the mean of its divisors is an integer number (1629242160).

Almost surely, 2^28528361004 is an apocalyptic number.

It is an amenable number.

28528361004 is an abundant number, since it is smaller than the sum of its proper divisors (49675262676).

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

28528361004 is a wasteful number, since it uses less digits than its factorization.

28528361004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16624950 (or 16624948 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 28528361004 in words is "twenty-eight billion, five hundred twenty-eight million, three hundred sixty-one thousand, four".