40441428 has 36 divisors (see below), whose sum is σ = 105754740. Its totient is φ = 13015296.

The previous prime is 40441409. The next prime is 40441459. The reversal of 40441428 is 82414404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 29030544 = 3378^2 + 5388^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 18325 + ... + 20412.

Almost surely, 2^40441428 is an apocalyptic number.

It is an amenable number.

40441428 is an abundant number, since it is smaller than the sum of its proper divisors (65313312).

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

40441428 is a wasteful number, since it uses less digits than its factorization.

40441428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38776 (or 38771 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 40441428 is about 6359.3575147180. The cubic root of 40441428 is about 343.2486417763.

The spelling of 40441428 in words is "forty million, four hundred forty-one thousand, four hundred twenty-eight".