100032840 has 64 divisors (see below), whose sum is σ = 333446400. Its totient is φ = 26675136.

The previous prime is 100032827. The next prime is 100032847. The reversal of 100032840 is 48230001.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (100032847) by changing a digit.

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, 45232 + ... + 47391.

It is an arithmetic number, because the mean of its divisors is an integer number (5210100).

Almost surely, 2^100032840 is an apocalyptic number.

100032840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100032840 is an abundant number, since it is smaller than the sum of its proper divisors (233413560).

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

100032840 is a wasteful number, since it uses less digits than its factorization.

100032840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92643 (or 92633 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 100032840 is about 10001.6418652139. The cubic root of 100032840 is about 464.2096877261.

Adding to 100032840 its reverse (48230001), we get a palindrome (148262841).

The spelling of 100032840 in words is "one hundred million, thirty-two thousand, eight hundred forty".