635235040 has 96 divisors (see below), whose sum is σ = 1661917824. Its totient is φ = 227504640.

The previous prime is 635235023. The next prime is 635235047. The reversal of 635235040 is 40532536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635235047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115227 + ... + 120613.

It is an arithmetic number, because the mean of its divisors is an integer number (17311644).

Almost surely, 2^635235040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 635235040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830958912).

635235040 is an abundant number, since it is smaller than the sum of its proper divisors (1026682784).

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

635235040 is a wasteful number, since it uses less digits than its factorization.

635235040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480 (or 5472 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 635235040 is about 25203.8695441791. The cubic root of 635235040 is about 859.6298388954.

Adding to 635235040 its reverse (40532536), we get a palindrome (675767576).

The spelling of 635235040 in words is "six hundred thirty-five million, two hundred thirty-five thousand, forty".