347894640 has 120 divisors (see below), whose sum is σ = 1184529840. Its totient is φ = 91487232.

The previous prime is 347894633. The next prime is 347894669. The reversal of 347894640 is 46498743.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49251 + ... + 55869.

It is an arithmetic number, because the mean of its divisors is an integer number (9871082).

Almost surely, 2^347894640 is an apocalyptic number.

347894640 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 347894640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592264920).

347894640 is an abundant number, since it is smaller than the sum of its proper divisors (836635200).

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

347894640 is a wasteful number, since it uses less digits than its factorization.

347894640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 347894640 is about 18651.9339479851. The cubic root of 347894640 is about 703.3139731474.

The spelling of 347894640 in words is "three hundred forty-seven million, eight hundred ninety-four thousand, six hundred forty".