1566632232 has 128 divisors (see below), whose sum is σ = 4997376000. Its totient is φ = 449737920.

The previous prime is 1566632209. The next prime is 1566632237. The reversal of 1566632232 is 2322366651.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1566632237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27793 + ... + 62495.

It is an arithmetic number, because the mean of its divisors is an integer number (39042000).

Almost surely, 2^1566632232 is an apocalyptic number.

1566632232 is a gapful number since it is divisible by the number (12) 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 1566632232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2498688000).

1566632232 is an abundant number, since it is smaller than the sum of its proper divisors (3430743768).

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

1566632232 is a wasteful number, since it uses less digits than its factorization.

1566632232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34748 (or 34738 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 1566632232 is about 39580.7052994259. The cubic root of 1566632232 is about 1161.4192477956.

Adding to 1566632232 its reverse (2322366651), we get a palindrome (3888998883).

The spelling of 1566632232 in words is "one billion, five hundred sixty-six million, six hundred thirty-two thousand, two hundred thirty-two".