40531264 has 28 divisors (see below), whose sum is σ = 85162644. Its totient is φ = 19073024.

The previous prime is 40531259. The next prime is 40531319. The reversal of 40531264 is 46213504.

It can be written as a sum of positive squares in 2 ways, for example, as 37945600 + 2585664 = 6160^2 + 1608^2 .

It is a super-2 number, since 2×40531264² = 3285566722875392, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 17539 + ... + 19714.

It is an arithmetic number, because the mean of its divisors is an integer number (3041523).

Almost surely, 2^40531264 is an apocalyptic number.

It is an amenable number.

40531264 is an abundant number, since it is smaller than the sum of its proper divisors (44631380).

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

40531264 is a wasteful number, since it uses less digits than its factorization.

40531264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37282 (or 37272 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40531264 is about 6366.4168886431. The cubic root of 40531264 is about 343.5026163242.

Adding to 40531264 its reverse (46213504), we get a palindrome (86744768).

The spelling of 40531264 in words is "forty million, five hundred thirty-one thousand, two hundred sixty-four".