100851500 has 48 divisors (see below), whose sum is σ = 221247936. Its totient is φ = 40160000.

The previous prime is 100851493. The next prime is 100851539. The reversal of 100851500 is 5158001.

It is a hoax number, since the sum of its digits (20) 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 (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200249 + ... + 200751.

It is an arithmetic number, because the mean of its divisors is an integer number (4609332).

Almost surely, 2^100851500 is an apocalyptic number.

100851500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100851500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110623968).

100851500 is an abundant number, since it is smaller than the sum of its proper divisors (120396436).

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

100851500 is a wasteful number, since it uses less digits than its factorization.

100851500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 100851500 is about 10042.4847522911. The cubic root of 100851500 is about 465.4725992540.

The spelling of 100851500 in words is "one hundred million, eight hundred fifty-one thousand, five hundred".