632421888 has 160 divisors (see below), whose sum is σ = 1944518400. Its totient is φ = 178913280.

The previous prime is 632421887. The next prime is 632421893. The reversal of 632421888 is 888124236.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632421887) 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, 1408288 + ... + 1408736.

It is an arithmetic number, because the mean of its divisors is an integer number (12153240).

Almost surely, 2^632421888 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 632421888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972259200).

632421888 is an abundant number, since it is smaller than the sum of its proper divisors (1312096512).

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

632421888 is a wasteful number, since it uses less digits than its factorization.

632421888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 592 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 632421888 is about 25147.9996818832. Note that the first 3 decimals coincide. The cubic root of 632421888 is about 858.3589980030.

The spelling of 632421888 in words is "six hundred thirty-two million, four hundred twenty-one thousand, eight hundred eighty-eight".