235215220240 has 480 divisors, whose sum is σ = 743422417920. Its totient is φ = 67346104320.

The previous prime is 235215220199. The next prime is 235215220249. The reversal of 235215220240 is 42022512532.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 235215220199 and 235215220208.

It is not an unprimeable number, because it can be changed into a prime (235215220249) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 226385641 + ... + 226386679.

It is an arithmetic number, because the mean of its divisors is an integer number (1548796704).

Almost surely, 2^235215220240 is an apocalyptic number.

235215220240 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 235215220240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371711208960).

235215220240 is an abundant number, since it is smaller than the sum of its proper divisors (508207197680).

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

235215220240 is a wasteful number, since it uses less digits than its factorization.

235215220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 235215220240 its reverse (42022512532), we get a palindrome (277237732772).

The spelling of 235215220240 in words is "two hundred thirty-five billion, two hundred fifteen million, two hundred twenty thousand, two hundred forty".