740280 has 64 divisors (see below), whose sum is σ = 2304000. Its totient is φ = 190080.

The previous prime is 740279. The next prime is 740287. The reversal of 740280 is 82047.

It is a happy number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740287) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3621 + ... + 3819.

It is an arithmetic number, because the mean of its divisors is an integer number (36000).

2⁷⁴⁰²⁸⁰ 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 740280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152000).

740280 is an abundant number, since it is smaller than the sum of its proper divisors (1563720).

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

740280 is a wasteful number, since it uses less digits than its factorization.

740280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 740280 is about 860.3952580065. The cubic root of 740280 is about 90.4618236872.

The spelling of 740280 in words is "seven hundred forty thousand, two hundred eighty".