100232640 has 168 divisors, whose sum is σ = 357804720. Its totient is φ = 26707968.

The previous prime is 100232621. The next prime is 100232653. The reversal of 100232640 is 46232001.

It is a happy number.

100232640 is a `hidden beast` number, since 1 + 0 + 0 + 23 + 2 + 640 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77116 + ... + 78404.

It is an arithmetic number, because the mean of its divisors is an integer number (2129790).

Almost surely, 2^100232640 is an apocalyptic number.

100232640 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 100232640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178902360).

100232640 is an abundant number, since it is smaller than the sum of its proper divisors (257572080).

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

100232640 is an equidigital number, since it uses as much as digits as its factorization.

100232640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 100232640 is about 10011.6252426866. The cubic root of 100232640 is about 464.5185443423.

Adding to 100232640 its reverse (46232001), we get a palindrome (146464641).

The spelling of 100232640 in words is "one hundred million, two hundred thirty-two thousand, six hundred forty".