40340400 has 60 divisors (see below), whose sum is σ = 129227592. Its totient is φ = 10757120.

The previous prime is 40340387. The next prime is 40340437. The reversal of 40340400 is 404304.

40340400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40340400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15609 + ... + 18008.

Almost surely, 2^40340400 is an apocalyptic number.

40340400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40340400 is an abundant number, since it is smaller than the sum of its proper divisors (88887192).

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

40340400 is a wasteful number, since it uses less digits than its factorization.

40340400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33638 (or 33627 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40340400 is about 6351.4092924327. The cubic root of 40340400 is about 342.9625767011.

Adding to 40340400 its reverse (404304), we get a palindrome (40744704).

The spelling of 40340400 in words is "forty million, three hundred forty thousand, four hundred".