235540440 has 128 divisors (see below), whose sum is σ = 831384000. Its totient is φ = 59111424.

The previous prime is 235540429. The next prime is 235540499. The reversal of 235540440 is 44045532.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11946 + ... + 24774.

Almost surely, 2^235540440 is an apocalyptic number.

235540440 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 235540440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415692000).

235540440 is an abundant number, since it is smaller than the sum of its proper divisors (595843560).

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

235540440 is a wasteful number, since it uses less digits than its factorization.

235540440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12866 (or 12856 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 235540440 is about 15347.3268030625. The cubic root of 235540440 is about 617.5732750277.

Adding to 235540440 its reverse (44045532), we get a palindrome (279585972).

The spelling of 235540440 in words is "two hundred thirty-five million, five hundred forty thousand, four hundred forty".