348640440 has 128 divisors (see below), whose sum is σ = 1110412800. Its totient is φ = 87380480.

The previous prime is 348640433. The next prime is 348640469. The reversal of 348640440 is 44046843.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161770 + ... + 163910.

It is an arithmetic number, because the mean of its divisors is an integer number (8675100).

Almost surely, 2^348640440 is an apocalyptic number.

348640440 is a gapful number since it is divisible by the number (30) 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 348640440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555206400).

348640440 is an abundant number, since it is smaller than the sum of its proper divisors (761772360).

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

348640440 is a wasteful number, since it uses less digits than its factorization.

348640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 348640440 is about 18671.9158095788. The cubic root of 348640440 is about 703.8161914675.

The spelling of 348640440 in words is "three hundred forty-eight million, six hundred forty thousand, four hundred forty".