235613640 has 64 divisors (see below), whose sum is σ = 729653760. Its totient is φ = 60802560.

The previous prime is 235613627. The next prime is 235613647. The reversal of 235613640 is 46316532.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 235613598 and 235613607.

It is not an unprimeable number, because it can be changed into a prime (235613647) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27949 + ... + 35388.

It is an arithmetic number, because the mean of its divisors is an integer number (11400840).

Almost surely, 2^235613640 is an apocalyptic number.

235613640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235613640 is an abundant number, since it is smaller than the sum of its proper divisors (494040120).

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

235613640 is a wasteful number, since it uses less digits than its factorization.

235613640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63382 (or 63378 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 235613640 is about 15349.7113979384. The cubic root of 235613640 is about 617.6372437763.

The spelling of 235613640 in words is "two hundred thirty-five million, six hundred thirteen thousand, six hundred forty".