732144 has 40 divisors (see below), whose sum is σ = 2162560. Its totient is φ = 209088.

The previous prime is 732133. The next prime is 732157. The reversal of 732144 is 441237.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a self number, because there is not a number n which added to its sum of digits gives 732144.

It is a congruent number.

It is an unprimeable number.

732144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754 + ... + 1425.

It is an arithmetic number, because the mean of its divisors is an integer number (54064).

2⁷³²¹⁴⁴ is an apocalyptic number.

It is an amenable number.

732144 is an abundant number, since it is smaller than the sum of its proper divisors (1430416).

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

732144 is a wasteful number, since it uses less digits than its factorization.

732144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197 (or 2191 counting only the distinct ones).

The product of its digits is 672, while the sum is 21.

The square root of 732144 is about 855.6541357348. The cubic root of 732144 is about 90.1291971617.

The spelling of 732144 in words is "seven hundred thirty-two thousand, one hundred forty-four".