632389632 has 128 divisors (see below), whose sum is σ = 1929350400. Its totient is φ = 180486144.

The previous prime is 632389627. The next prime is 632389649. The reversal of 632389632 is 236983236.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×632389632² = 799833293322190848, which contains 22 as substring.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687669 + ... + 688587.

It is an arithmetic number, because the mean of its divisors is an integer number (15073050).

Almost surely, 2^632389632 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 632389632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964675200).

632389632 is an abundant number, since it is smaller than the sum of its proper divisors (1296960768).

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

632389632 is an frugal number, since it uses more digits than its factorization.

632389632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959 (or 931 counting only the distinct ones).

The product of its digits is 279936, while the sum is 42.

The square root of 632389632 is about 25147.3583503318. The cubic root of 632389632 is about 858.3444045283.

The spelling of 632389632 in words is "six hundred thirty-two million, three hundred eighty-nine thousand, six hundred thirty-two".