346519980 has 144 divisors (see below), whose sum is σ = 1087107840. Its totient is φ = 89299584.

The previous prime is 346519969. The next prime is 346519981. The reversal of 346519980 is 89915643.

It is a happy number.

346519980 is a `hidden beast` number, since 3 + 46 + 519 + 98 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (346519981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 711297 + ... + 711783.

It is an arithmetic number, because the mean of its divisors is an integer number (7549360).

Almost surely, 2^346519980 is an apocalyptic number.

346519980 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 346519980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543553920).

346519980 is an abundant number, since it is smaller than the sum of its proper divisors (740587860).

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

346519980 is a wasteful number, since it uses less digits than its factorization.

346519980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 346519980 is about 18615.0471393440. The cubic root of 346519980 is about 702.3863993982.

The spelling of 346519980 in words is "three hundred forty-six million, five hundred nineteen thousand, nine hundred eighty".