100587990 has 32 divisors (see below), whose sum is σ = 246551040. Its totient is φ = 26252384.

The previous prime is 100587989. The next prime is 100588063. The reversal of 100587990 is 99785001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 34260 + ... + 37079.

It is an arithmetic number, because the mean of its divisors is an integer number (7704720).

Almost surely, 2^100587990 is an apocalyptic number.

100587990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100587990 is an abundant number, since it is smaller than the sum of its proper divisors (145963050).

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

100587990 is a wasteful number, since it uses less digits than its factorization.

100587990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71396.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 100587990 is about 10029.3564100594. The cubic root of 100587990 is about 465.0668420504.

The spelling of 100587990 in words is "one hundred million, five hundred eighty-seven thousand, nine hundred ninety".