40448448 has 42 divisors (see below), whose sum is σ = 115939824. Its totient is φ = 13482624.

The previous prime is 40448431. The next prime is 40448501. The reversal of 40448448 is 84484404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34536 + ... + 35687.

It is an arithmetic number, because the mean of its divisors is an integer number (2760472).

Almost surely, 2^40448448 is an apocalyptic number.

40448448 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40448448 is an abundant number, since it is smaller than the sum of its proper divisors (75491376).

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

40448448 is a wasteful number, since it uses less digits than its factorization.

40448448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70241 (or 70228 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The square root of 40448448 is about 6359.9094333174. The cubic root of 40448448 is about 343.2685014943.

The spelling of 40448448 in words is "forty million, four hundred forty-eight thousand, four hundred forty-eight".