100091904 has 96 divisors (see below), whose sum is σ = 291301920. Its totient is φ = 30310400.

The previous prime is 100091899. The next prime is 100091969. The reversal of 100091904 is 409190001.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66844 + ... + 68324.

It is an arithmetic number, because the mean of its divisors is an integer number (3034395).

Almost surely, 2^100091904 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 100091904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145650960).

100091904 is an abundant number, since it is smaller than the sum of its proper divisors (191210016).

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

100091904 is a wasteful number, since it uses less digits than its factorization.

100091904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 100091904 is about 10004.5941446917. The cubic root of 100091904 is about 464.3010333497.

The spelling of 100091904 in words is "one hundred million, ninety-one thousand, nine hundred four".