747120 has 80 divisors (see below), whose sum is σ = 2535552. Its totient is φ = 180480.

The previous prime is 747113. The next prime is 747139. The reversal of 747120 is 21747.

747120 = T₂₁ + T₂₂ + ... + T₁₆₄.

747120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

747120 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2499 + ... + 2781.

2⁷⁴⁷¹²⁰ 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 747120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267776).

747120 is an abundant number, since it is smaller than the sum of its proper divisors (1788432).

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

747120 is a wasteful number, since it uses less digits than its factorization.

747120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 747120 is about 864.3610356790. The cubic root of 747120 is about 90.7395847468.

Adding to 747120 its reverse (21747), we get a palindrome (768867).

The spelling of 747120 in words is "seven hundred forty-seven thousand, one hundred twenty", and thus it is an iban number.