28170513390 has 64 divisors (see below), whose sum is σ = 71233883136. Its totient is φ = 7115741952.

The previous prime is 28170513373. The next prime is 28170513401. The reversal of 28170513390 is 9331507182.

28170513390 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127119 + ... + 269258.

It is an arithmetic number, because the mean of its divisors is an integer number (1113029424).

Almost surely, 2^28170513390 is an apocalyptic number.

28170513390 is an abundant number, since it is smaller than the sum of its proper divisors (43063369746).

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

28170513390 is a wasteful number, since it uses less digits than its factorization.

28170513390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396513.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 28170513390 in words is "twenty-eight billion, one hundred seventy million, five hundred thirteen thousand, three hundred ninety".