5128185280 has 56 divisors (see below), whose sum is σ = 12228710112. Its totient is φ = 2048381952.

The previous prime is 5128185259. The next prime is 5128185287. The reversal of 5128185280 is 825818215.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128185287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223629 + ... + 245491.

Almost surely, 2^5128185280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5128185280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6114355056).

5128185280 is an abundant number, since it is smaller than the sum of its proper divisors (7100524832).

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

5128185280 is a wasteful number, since it uses less digits than its factorization.

5128185280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22613 (or 22603 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 40.

The square root of 5128185280 is about 71611.3488212588. The cubic root of 5128185280 is about 1724.4657344258.

The spelling of 5128185280 in words is "five billion, one hundred twenty-eight million, one hundred eighty-five thousand, two hundred eighty".