730641632 has 48 divisors (see below), whose sum is σ = 1654111872. Its totient is φ = 311195520.

The previous prime is 730641629. The next prime is 730641643. The reversal of 730641632 is 236146037.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a zygodrome in base 15.

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, 26507 + ... + 46517.

It is an arithmetic number, because the mean of its divisors is an integer number (34460664).

Almost surely, 2^730641632 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 730641632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827055936).

730641632 is an abundant number, since it is smaller than the sum of its proper divisors (923470240).

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

730641632 is a wasteful number, since it uses less digits than its factorization.

730641632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20191 (or 20183 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 730641632 is about 27030.3834970945. The cubic root of 730641632 is about 900.6750622543.

Adding to 730641632 its reverse (236146037), we get a palindrome (966787669).

The spelling of 730641632 in words is "seven hundred thirty million, six hundred forty-one thousand, six hundred thirty-two".