40448420 has 12 divisors (see below), whose sum is σ = 84941724. Its totient is φ = 16179360.

The previous prime is 40448413. The next prime is 40448431. The reversal of 40448420 is 2484404.

It can be written as a sum of positive squares in 2 ways, for example, as 7086244 + 33362176 = 2662^2 + 5776^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40448420.

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 3 ways as a sum of consecutive naturals, for example, 1011191 + ... + 1011230.

It is an arithmetic number, because the mean of its divisors is an integer number (7078477).

Almost surely, 2^40448420 is an apocalyptic number.

It is an amenable number.

40448420 is an abundant number, since it is smaller than the sum of its proper divisors (44493304).

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

40448420 is a wasteful number, since it uses less digits than its factorization.

40448420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022430 (or 2022428 counting only the distinct ones).

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

The square root of 40448420 is about 6359.9072320278. The cubic root of 40448420 is about 343.2684222863.

The spelling of 40448420 in words is "forty million, four hundred forty-eight thousand, four hundred twenty".