240891644 has 48 divisors (see below), whose sum is σ = 494020800. Its totient is φ = 102735360.

The previous prime is 240891589. The next prime is 240891653. The reversal of 240891644 is 446198042.

It is a junction number, because it is equal to n+sod(n) for n = 240891598 and 240891607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462104 + ... + 462624.

It is an arithmetic number, because the mean of its divisors is an integer number (10292100).

Almost surely, 2^240891644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240891644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247010400).

240891644 is an abundant number, since it is smaller than the sum of its proper divisors (253129156).

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

240891644 is a wasteful number, since it uses less digits than its factorization.

240891644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 240891644 is about 15520.6843921265. The cubic root of 240891644 is about 622.2151459843.

The spelling of 240891644 in words is "two hundred forty million, eight hundred ninety-one thousand, six hundred forty-four".