740028 has 24 divisors (see below), whose sum is σ = 1749888. Its totient is φ = 243376.

The previous prime is 740023. The next prime is 740041. The reversal of 740028 is 820047.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 739986 and 740013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740021) by changing a digit.

740028 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, 625 + ... + 1367.

It is an arithmetic number, because the mean of its divisors is an integer number (72912).

2⁷⁴⁰⁰²⁸ is an apocalyptic number.

It is an amenable number.

740028 is an abundant number, since it is smaller than the sum of its proper divisors (1009860).

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

740028 is a wasteful number, since it uses less digits than its factorization.

740028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 831 counting only the distinct ones).

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

The square root of 740028 is about 860.2488012197. The cubic root of 740028 is about 90.4515577668.

The spelling of 740028 in words is "seven hundred forty thousand, twenty-eight".