40448240 has 40 divisors (see below), whose sum is σ = 107478240. Its totient is φ = 13867776.

The previous prime is 40448227. The next prime is 40448257. The reversal of 40448240 is 4284404.

It is a tau number, because it is divible by the number of its divisors (40).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35555 + ... + 36674.

It is an arithmetic number, because the mean of its divisors is an integer number (2686956).

Almost surely, 2^40448240 is an apocalyptic number.

40448240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40448240 is an abundant number, since it is smaller than the sum of its proper divisors (67030000).

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

40448240 is a wasteful number, since it uses less digits than its factorization.

40448240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72249 (or 72243 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 40448240 is about 6359.8930808623. The cubic root of 40448240 is about 343.2679130912.

The spelling of 40448240 in words is "forty million, four hundred forty-eight thousand, two hundred forty".