340402400 has 144 divisors (see below), whose sum is σ = 909504288. Its totient is φ = 123648000.

The previous prime is 340402397. The next prime is 340402427. The reversal of 340402400 is 4204043.

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, 738170 + ... + 738630.

It is an arithmetic number, because the mean of its divisors is an integer number (6316002).

Almost surely, 2^340402400 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 340402400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454752144).

340402400 is an abundant number, since it is smaller than the sum of its proper divisors (569101888).

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

340402400 is a wasteful number, since it uses less digits than its factorization.

340402400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 340402400 is about 18449.9972899727. The cubic root of 340402400 is about 698.2284455162.

Adding to 340402400 its reverse (4204043), we get a palindrome (344606443).

The spelling of 340402400 in words is "three hundred forty million, four hundred two thousand, four hundred".