241561440 has 336 divisors, whose sum is σ = 908938800. Its totient is φ = 60466176.

The previous prime is 241561429. The next prime is 241561447. The reversal of 241561440 is 44165142.

241561440 is a `hidden beast` number, since 2 + 4 + 1 + 5 + 614 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241561447) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2216106 + ... + 2216214.

It is an arithmetic number, because the mean of its divisors is an integer number (2705175).

Almost surely, 2^241561440 is an apocalyptic number.

241561440 is a gapful number since it is divisible by the number (20) 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 241561440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454469400).

241561440 is an abundant number, since it is smaller than the sum of its proper divisors (667377360).

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

241561440 is a wasteful number, since it uses less digits than its factorization.

241561440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 241561440 is about 15542.2469418035. The cubic root of 241561440 is about 622.7912992870.

The spelling of 241561440 in words is "two hundred forty-one million, five hundred sixty-one thousand, four hundred forty".