734720 has 80 divisors (see below), whose sum is σ = 2062368. Its totient is φ = 245760.

The previous prime is 734717. The next prime is 734729. The reversal of 734720 is 27437.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (734729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17900 + ... + 17940.

2⁷³⁴⁷²⁰ is an apocalyptic number.

734720 is a gapful number since it is divisible by the number (70) 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 734720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031184).

734720 is an abundant number, since it is smaller than the sum of its proper divisors (1327648).

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

734720 is an equidigital number, since it uses as much as digits as its factorization.

734720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 734720 is about 857.1580951026. The cubic root of 734720 is about 90.2347779618.

The spelling of 734720 in words is "seven hundred thirty-four thousand, seven hundred twenty".