343402400 has 72 divisors (see below), whose sum is σ = 914566464. Its totient is φ = 124870400.

The previous prime is 343402399. The next prime is 343402421. The reversal of 343402400 is 4204343.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10712 + ... + 28311.

It is an arithmetic number, because the mean of its divisors is an integer number (12702312).

Almost surely, 2^343402400 is an apocalyptic number.

It is an amenable number.

343402400 is an abundant number, since it is smaller than the sum of its proper divisors (571164064).

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

343402400 is a wasteful number, since it uses less digits than its factorization.

343402400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39054 (or 39041 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 343402400 is about 18531.1197718864. The cubic root of 343402400 is about 700.2736345172.

Adding to 343402400 its reverse (4204343), we get a palindrome (347606743).

The spelling of 343402400 in words is "three hundred forty-three million, four hundred two thousand, four hundred".