348440 has 32 divisors (see below), whose sum is σ = 812160. Its totient is φ = 134400.

The previous prime is 348437. The next prime is 348443. The reversal of 348440 is 44843.

348440 = T₂₀₈ + T₂₀₉ + ... + T₂₂₂.

348440 = 140² + 141² + ... + 155².

It is an interprime number because it is at equal distance from previous prime (348437) and next prime (348443).

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 348440.

It is not an unprimeable number, because it can be changed into a prime (348443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (25380).

2³⁴⁸⁴⁴⁰ 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 348440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406080).

348440 is an abundant number, since it is smaller than the sum of its proper divisors (463720).

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

348440 is a wasteful number, since it uses less digits than its factorization.

348440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 348440 is about 590.2880652698. The cubic root of 348440 is about 70.3681286520.

The spelling of 348440 in words is "three hundred forty-eight thousand, four hundred forty".