40243400 has 48 divisors (see below), whose sum is σ = 94011840. Its totient is φ = 16020800.

The previous prime is 40243393. The next prime is 40243417. The reversal of 40243400 is 434204.

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, 61877 + ... + 62523.

It is an arithmetic number, because the mean of its divisors is an integer number (1958580).

Almost surely, 2^40243400 is an apocalyptic number.

40243400 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 40243400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47005920).

40243400 is an abundant number, since it is smaller than the sum of its proper divisors (53768440).

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

40243400 is a wasteful number, since it uses less digits than its factorization.

40243400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 965 counting only the distinct ones).

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

The square root of 40243400 is about 6343.7685960319. The cubic root of 40243400 is about 342.6874673002.

Adding to 40243400 its reverse (434204), we get a palindrome (40677604).

The spelling of 40243400 in words is "forty million, two hundred forty-three thousand, four hundred".