40284428 has 6 divisors (see below), whose sum is σ = 70497756. Its totient is φ = 20142212.

The previous prime is 40284403. The next prime is 40284443. The reversal of 40284428 is 82448204.

It is a junction number, because it is equal to n+sod(n) for n = 40284394 and 40284403.

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 as a sum of consecutive naturals, namely, 5035550 + ... + 5035557.

It is an arithmetic number, because the mean of its divisors is an integer number (11749626).

Almost surely, 2^40284428 is an apocalyptic number.

It is an amenable number.

40284428 is a deficient number, since it is larger than the sum of its proper divisors (30213328).

40284428 is a wasteful number, since it uses less digits than its factorization.

40284428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071111 (or 10071109 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 40284428 is about 6347.0014967700. The cubic root of 40284428 is about 342.8038839561.

The spelling of 40284428 in words is "forty million, two hundred eighty-four thousand, four hundred twenty-eight".