346840380 has 120 divisors (see below), whose sum is σ = 1092955248. Its totient is φ = 92074752.

The previous prime is 346840357. The next prime is 346840411. The reversal of 346840380 is 83048643.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 561832 + ... + 562448.

Almost surely, 2^346840380 is an apocalyptic number.

346840380 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 346840380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546477624).

346840380 is an abundant number, since it is smaller than the sum of its proper divisors (746114868).

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

346840380 is a wasteful number, since it uses less digits than its factorization.

346840380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 346840380 is about 18623.6510920925. The cubic root of 346840380 is about 702.6028133527.

The spelling of 346840380 in words is "three hundred forty-six million, eight hundred forty thousand, three hundred eighty".