100438740 has 72 divisors (see below), whose sum is σ = 305480448. Its totient is φ = 26712000.

The previous prime is 100438739. The next prime is 100438753. The reversal of 100438740 is 47834001.

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, 133365 + ... + 134115.

It is an arithmetic number, because the mean of its divisors is an integer number (4242784).

Almost surely, 2^100438740 is an apocalyptic number.

100438740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100438740 is an abundant number, since it is smaller than the sum of its proper divisors (205041708).

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

100438740 is a wasteful number, since it uses less digits than its factorization.

100438740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509 (or 1504 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 100438740 is about 10021.9129910412. The cubic root of 100438740 is about 464.8367099219.

The spelling of 100438740 in words is "one hundred million, four hundred thirty-eight thousand, seven hundred forty".