101047440 has 160 divisors (see below), whose sum is σ = 341228160. Its totient is φ = 24588288.

The previous prime is 101047409. The next prime is 101047447. The reversal of 101047440 is 44740101.

It is not an unprimeable number, because it can be changed into a prime (101047447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 433564 + ... + 433796.

It is an arithmetic number, because the mean of its divisors is an integer number (2132676).

Almost surely, 2^101047440 is an apocalyptic number.

101047440 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 101047440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170614080).

101047440 is an abundant number, since it is smaller than the sum of its proper divisors (240180720).

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

101047440 is a wasteful number, since it uses less digits than its factorization.

101047440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 101047440 is about 10052.2355722496. The cubic root of 101047440 is about 465.7738530741.

Adding to 101047440 its reverse (44740101), we get a palindrome (145787541).

The spelling of 101047440 in words is "one hundred one million, forty-seven thousand, four hundred forty".