100545240 has 64 divisors (see below), whose sum is σ = 307346400. Its totient is φ = 26304512.

The previous prime is 100545229. The next prime is 100545257. The reversal of 100545240 is 42545001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1545 + ... + 14264.

Almost surely, 2^100545240 is an apocalyptic number.

100545240 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 100545240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153673200).

100545240 is an abundant number, since it is smaller than the sum of its proper divisors (206801160).

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

100545240 is a wasteful number, since it uses less digits than its factorization.

100545240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15876 (or 15872 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 100545240 is about 10027.2249401317. The cubic root of 100545240 is about 465.0009480846. Note that the first 3 decimals are identical.

The spelling of 100545240 in words is "one hundred million, five hundred forty-five thousand, two hundred forty".