632401440 has 96 divisors (see below), whose sum is σ = 2173179456. Its totient is φ = 153308160.

The previous prime is 632401433. The next prime is 632401487. The reversal of 632401440 is 44104236.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 632401440.

It is an unprimeable number.

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, 54607 + ... + 65166.

It is an arithmetic number, because the mean of its divisors is an integer number (22637286).

Almost surely, 2^632401440 is an apocalyptic number.

632401440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

632401440 is an abundant number, since it is smaller than the sum of its proper divisors (1540778016).

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

632401440 is a wasteful number, since it uses less digits than its factorization.

632401440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119802 (or 119794 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 632401440 is about 25147.5931253868. The cubic root of 632401440 is about 858.3497468400.

Adding to 632401440 its reverse (44104236), we get a palindrome (676505676).

The spelling of 632401440 in words is "six hundred thirty-two million, four hundred one thousand, four hundred forty".