1632729888 has 144 divisors (see below), whose sum is σ = 5100338880. Its totient is φ = 493143552.

The previous prime is 1632729887. The next prime is 1632729919. The reversal of 1632729888 is 8889272361.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (1632729887) 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 23 ways as a sum of consecutive naturals, for example, 119370 + ... + 132342.

It is an arithmetic number, because the mean of its divisors is an integer number (35419020).

Almost surely, 2^1632729888 is an apocalyptic number.

1632729888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1632729888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2550169440).

1632729888 is an abundant number, since it is smaller than the sum of its proper divisors (3467608992).

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

1632729888 is a wasteful number, since it uses less digits than its factorization.

1632729888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13031 (or 13020 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 1632729888 is about 40407.0524537487. The cubic root of 1632729888 is about 1177.5285551651.

The spelling of 1632729888 in words is "one billion, six hundred thirty-two million, seven hundred twenty-nine thousand, eight hundred eighty-eight".