740390 has 24 divisors (see below), whose sum is σ = 1551312. Its totient is φ = 253680.

The previous prime is 740387. The next prime is 740423. The reversal of 740390 is 93047.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266 + ... + 1245.

It is an arithmetic number, because the mean of its divisors is an integer number (64638).

2⁷⁴⁰³⁹⁰ is an apocalyptic number.

740390 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

740390 is an abundant number, since it is smaller than the sum of its proper divisors (810922).

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

740390 is a wasteful number, since it uses less digits than its factorization.

740390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 740390 is about 860.4591797407. The cubic root of 740390 is about 90.4663041126.

The spelling of 740390 in words is "seven hundred forty thousand, three hundred ninety".