740040 has 64 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 168960.

The previous prime is 740023. The next prime is 740041. The reversal of 740040 is 40047.

740040 = T₁₀₉ + T₁₁₀ + ... + T₁₇₈.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (740041) by changing a digit.

740040 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, 400 + ... + 1280.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2⁷⁴⁰⁰⁴⁰ is an apocalyptic number.

740040 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 740040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

740040 is an abundant number, since it is smaller than the sum of its proper divisors (1800120).

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

740040 is a wasteful number, since it uses less digits than its factorization.

740040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 740040 is about 860.2557759178. The cubic root of 740040 is about 90.4520466730.

Adding to 740040 its reverse (40047), we get a palindrome (780087).

The spelling of 740040 in words is "seven hundred forty thousand, forty", and thus it is an iban number.