740238 has 8 divisors (see below), whose sum is σ = 1480488. Its totient is φ = 246744.

The previous prime is 740237. The next prime is 740279. The reversal of 740238 is 832047.

It is a sphenic number, since it is the product of 3 distinct primes.

740238 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 740238.

It is not an unprimeable number, because it can be changed into a prime (740237) 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 3 ways as a sum of consecutive naturals, for example, 61681 + ... + 61692.

It is an arithmetic number, because the mean of its divisors is an integer number (185061).

2⁷⁴⁰²³⁸ is an apocalyptic number.

740238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

740238 is a wasteful number, since it uses less digits than its factorization.

740238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123378.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 740238 is about 860.3708502733. The cubic root of 740238 is about 90.4601128623.

Subtracting 740238 from its reverse (832047), we obtain a square (91809 = 303²).

The spelling of 740238 in words is "seven hundred forty thousand, two hundred thirty-eight".