40084428 has 48 divisors (see below), whose sum is σ = 96598656. Its totient is φ = 12929280.

The previous prime is 40084391. The next prime is 40084439. The reversal of 40084428 is 82448004.

40084428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40084428² = 3213522736174368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40084395 and 40084404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67300 + ... + 67892.

It is an arithmetic number, because the mean of its divisors is an integer number (2012472).

Almost surely, 2^40084428 is an apocalyptic number.

It is an amenable number.

40084428 is an abundant number, since it is smaller than the sum of its proper divisors (56514228).

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

40084428 is a wasteful number, since it uses less digits than its factorization.

40084428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 40084428 is about 6331.2264214763. The cubic root of 40084428 is about 342.2356366593.

The spelling of 40084428 in words is "forty million, eighty-four thousand, four hundred twenty-eight".