100787994 has 24 divisors (see below), whose sum is σ = 220046112. Its totient is φ = 33338760.

The previous prime is 100787993. The next prime is 100788013. The reversal of 100787994 is 499787001.

It is not an unprimeable number, because it can be changed into a prime (100787993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19014 + ... + 23729.

It is an arithmetic number, because the mean of its divisors is an integer number (9168588).

Almost surely, 2^100787994 is an apocalyptic number.

100787994 is an abundant number, since it is smaller than the sum of its proper divisors (119258118).

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

100787994 is a wasteful number, since it uses less digits than its factorization.

100787994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42882 (or 42879 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 100787994 is about 10039.3223874921. The cubic root of 100787994 is about 465.3748763322.

The spelling of 100787994 in words is "one hundred million, seven hundred eighty-seven thousand, nine hundred ninety-four".