1230021632 has 88 divisors (see below), whose sum is σ = 2839598400. Its totient is φ = 521625600.

The previous prime is 1230021619. The next prime is 1230021641. The reversal of 1230021632 is 2361200321.

It is a happy 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, 723119 + ... + 724817.

Almost surely, 2^1230021632 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 1230021632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1419799200).

1230021632 is an abundant number, since it is smaller than the sum of its proper divisors (1609576768).

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

1230021632 is a wasteful number, since it uses less digits than its factorization.

1230021632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827 (or 1809 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1230021632 is about 35071.6642319694. The cubic root of 1230021632 is about 1071.4475507969.

Adding to 1230021632 its reverse (2361200321), we get a palindrome (3591221953).

Subtracting 1230021632 from its reverse (2361200321), we obtain a square (1131178689 = 33633²).

The spelling of 1230021632 in words is "one billion, two hundred thirty million, twenty-one thousand, six hundred thirty-two".