2500100028 has 144 divisors (see below), whose sum is σ = 6919843840. Its totient is φ = 758160000.

The previous prime is 2500100017. The next prime is 2500100051. The reversal of 2500100028 is 8200010052.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3328653 + ... + 3329403.

Almost surely, 2^2500100028 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 2500100028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3459921920).

2500100028 is an abundant number, since it is smaller than the sum of its proper divisors (4419743812).

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

2500100028 is a wasteful number, since it uses less digits than its factorization.

2500100028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2500100028 is about 50001.0002699946. Note that the first 3 decimals coincide. The cubic root of 2500100028 is about 1357.2269092404.

The spelling of 2500100028 in words is "two billion, five hundred million, one hundred thousand, twenty-eight".