100201440 has 96 divisors (see below), whose sum is σ = 332277120. Its totient is φ = 25311744.

The previous prime is 100201399. The next prime is 100201441. The reversal of 100201440 is 44102001.

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 (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100201441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3627 + ... + 14613.

It is an arithmetic number, because the mean of its divisors is an integer number (3461220).

Almost surely, 2^100201440 is an apocalyptic number.

100201440 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 100201440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166138560).

100201440 is an abundant number, since it is smaller than the sum of its proper divisors (232075680).

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

100201440 is a wasteful number, since it uses less digits than its factorization.

100201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11024 (or 11016 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 100201440 is about 10010.0669328432. The cubic root of 100201440 is about 464.4703415392.

Adding to 100201440 its reverse (44102001), we get a palindrome (144303441).

The spelling of 100201440 in words is "one hundred million, two hundred one thousand, four hundred forty".