40045284 has 18 divisors (see below), whose sum is σ = 101225670. Its totient is φ = 13348416.

The previous prime is 40045253. The next prime is 40045301. The reversal of 40045284 is 48254004.

It can be written as a sum of positive squares in only one way, i.e., 31472100 + 8573184 = 5610^2 + 2928^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 556149 + ... + 556220.

Almost surely, 2^40045284 is an apocalyptic number.

It is an amenable number.

40045284 is an abundant number, since it is smaller than the sum of its proper divisors (61180386).

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

40045284 is a wasteful number, since it uses less digits than its factorization.

40045284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112379 (or 1112374 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 40045284 is about 6328.1343222154. The cubic root of 40045284 is about 342.1241982485.

Adding to 40045284 its reverse (48254004), we get a palindrome (88299288).

The spelling of 40045284 in words is "forty million, forty-five thousand, two hundred eighty-four".