240004240 has 40 divisors (see below), whose sum is σ = 637727040. Its totient is φ = 82286976.

The previous prime is 240004169. The next prime is 240004277. The reversal of 240004240 is 42400042.

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 (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213730 + ... + 214849.

It is an arithmetic number, because the mean of its divisors is an integer number (15943176).

Almost surely, 2^240004240 is an apocalyptic number.

240004240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240004240 is an abundant number, since it is smaller than the sum of its proper divisors (397722800).

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

240004240 is a wasteful number, since it uses less digits than its factorization.

240004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428599 (or 428593 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 240004240 is about 15492.0702296368. The cubic root of 240004240 is about 621.4501607986.

Adding to 240004240 its reverse (42400042), we get a palindrome (282404282).

The spelling of 240004240 in words is "two hundred forty million, four thousand, two hundred forty".