346681404 has 96 divisors (see below), whose sum is σ = 937036800. Its totient is φ = 110747520.

The previous prime is 346681403. The next prime is 346681411. The reversal of 346681404 is 404186643.

It is a super-2 number, since 2×346681404² = 240375991758822432, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346681403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260589 + ... + 261915.

It is an arithmetic number, because the mean of its divisors is an integer number (9760800).

Almost surely, 2^346681404 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 346681404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468518400).

346681404 is an abundant number, since it is smaller than the sum of its proper divisors (590355396).

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

346681404 is a wasteful number, since it uses less digits than its factorization.

346681404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440 (or 1432 counting only the distinct ones).

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

The square root of 346681404 is about 18619.3824817044. The cubic root of 346681404 is about 702.4954497917.

The spelling of 346681404 in words is "three hundred forty-six million, six hundred eighty-one thousand, four hundred four".