40343400 has 192 divisors, whose sum is σ = 144038400. Its totient is φ = 10368000.

The previous prime is 40343399. The next prime is 40343419. The reversal of 40343400 is 434304.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167280 + ... + 167520.

It is an arithmetic number, because the mean of its divisors is an integer number (750200).

Almost surely, 2^40343400 is an apocalyptic number.

40343400 is a gapful number since it is divisible by the number (40) 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 40343400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72019200).

40343400 is an abundant number, since it is smaller than the sum of its proper divisors (103695000).

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

40343400 is a wasteful number, since it uses less digits than its factorization.

40343400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40343400 is about 6351.6454561003. The cubic root of 40343400 is about 342.9710782052.

Adding to 40343400 its reverse (434304), we get a palindrome (40777704).

The spelling of 40343400 in words is "forty million, three hundred forty-three thousand, four hundred".