634502440 has 64 divisors (see below), whose sum is σ = 1677231360. Its totient is φ = 212977920.

The previous prime is 634502431. The next prime is 634502443. The reversal of 634502440 is 44205436.

634502440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 634502399 and 634502408.

It is not an unprimeable number, because it can be changed into a prime (634502443) 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, 49744 + ... + 61183.

It is an arithmetic number, because the mean of its divisors is an integer number (26206740).

Almost surely, 2^634502440 is an apocalyptic number.

It is an amenable number.

634502440 is an abundant number, since it is smaller than the sum of its proper divisors (1042728920).

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

634502440 is a wasteful number, since it uses less digits than its factorization.

634502440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110962 (or 110958 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 634502440 is about 25189.3318688686. The cubic root of 634502440 is about 859.2992488866.

Adding to 634502440 its reverse (44205436), we get a palindrome (678707876).

The spelling of 634502440 in words is "six hundred thirty-four million, five hundred two thousand, four hundred forty".