101980440 has 96 divisors (see below), whose sum is σ = 335527920. Its totient is φ = 26859264.

The previous prime is 101980409. The next prime is 101980441. The reversal of 101980440 is 44089101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101980441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28174 + ... + 31586.

Almost surely, 2^101980440 is an apocalyptic number.

101980440 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 101980440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167763960).

101980440 is an abundant number, since it is smaller than the sum of its proper divisors (233547480).

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

101980440 is a wasteful number, since it uses less digits than its factorization.

101980440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 101980440 is about 10098.5365276361. The cubic root of 101980440 is about 467.2030046681.

The spelling of 101980440 in words is "one hundred one million, nine hundred eighty thousand, four hundred forty".