636007240 has 64 divisors (see below), whose sum is σ = 1563831360. Its totient is φ = 230872320.

The previous prime is 636007231. The next prime is 636007301. The reversal of 636007240 is 42700636.

It is a junction number, because it is equal to n+sod(n) for n = 636007199 and 636007208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387702 + ... + 389338.

It is an arithmetic number, because the mean of its divisors is an integer number (24434865).

Almost surely, 2^636007240 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 636007240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781915680).

636007240 is an abundant number, since it is smaller than the sum of its proper divisors (927824120).

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

636007240 is a wasteful number, since it uses less digits than its factorization.

636007240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 636007240 is about 25219.1839677655. The cubic root of 636007240 is about 859.9780235956.

Adding to 636007240 its reverse (42700636), we get a palindrome (678707876).

The spelling of 636007240 in words is "six hundred thirty-six million, seven thousand, two hundred forty".