28551598770 has 32 divisors (see below), whose sum is σ = 72554652288. Its totient is φ = 7165891328.

The previous prime is 28551598759. The next prime is 28551598771. The reversal of 28551598770 is 7789515582.

It is a self number, because there is not a number n which added to its sum of digits gives 28551598770.

It is not an unprimeable number, because it can be changed into a prime (28551598771) 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 15 ways as a sum of consecutive naturals, for example, 27991254 + ... + 27992273.

It is an arithmetic number, because the mean of its divisors is an integer number (2267332884).

Almost surely, 2^28551598770 is an apocalyptic number.

28551598770 is an abundant number, since it is smaller than the sum of its proper divisors (44003053518).

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

28551598770 is a wasteful number, since it uses less digits than its factorization.

28551598770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55983554.

The product of its (nonzero) digits is 7056000, while the sum is 57.

The spelling of 28551598770 in words is "twenty-eight billion, five hundred fifty-one million, five hundred ninety-eight thousand, seven hundred seventy".