235420240 has 40 divisors (see below), whose sum is σ = 597113568. Its totient is φ = 85607040.

The previous prime is 235420217. The next prime is 235420243. The reversal of 235420240 is 42024532.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235420243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132882 + ... + 134641.

Almost surely, 2^235420240 is an apocalyptic number.

235420240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235420240 is an abundant number, since it is smaller than the sum of its proper divisors (361693328).

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

235420240 is a wasteful number, since it uses less digits than its factorization.

235420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267547 (or 267541 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 235420240 is about 15343.4103119222. The cubic root of 235420240 is about 617.4682046931.

Adding to 235420240 its reverse (42024532), we get a palindrome (277444772).

The spelling of 235420240 in words is "two hundred thirty-five million, four hundred twenty thousand, two hundred forty".