240894390 has 64 divisors (see below), whose sum is σ = 632282112. Its totient is φ = 58252800.

The previous prime is 240894371. The next prime is 240894391. The reversal of 240894390 is 93498042.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240894391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195075 + ... + 196305.

It is an arithmetic number, because the mean of its divisors is an integer number (9879408).

Almost surely, 2^240894390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240894390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316141056).

240894390 is an abundant number, since it is smaller than the sum of its proper divisors (391387722).

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

240894390 is a wasteful number, since it uses less digits than its factorization.

240894390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 240894390 is about 15520.7728544683. The cubic root of 240894390 is about 622.2175102511.

The spelling of 240894390 in words is "two hundred forty million, eight hundred ninety-four thousand, three hundred ninety".