40321264 has 10 divisors (see below), whose sum is σ = 78122480. Its totient is φ = 20160624.

The previous prime is 40321261. The next prime is 40321273. The reversal of 40321264 is 46212304.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40321261) by changing a digit.

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, 1260024 + ... + 1260055.

It is an arithmetic number, because the mean of its divisors is an integer number (7812248).

Almost surely, 2^40321264 is an apocalyptic number.

It is an amenable number.

40321264 is a deficient number, since it is larger than the sum of its proper divisors (37801216).

40321264 is a wasteful number, since it uses less digits than its factorization.

40321264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520087 (or 2520081 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40321264 is about 6349.9026764195. The cubic root of 40321264 is about 342.9083385191.

Adding to 40321264 its reverse (46212304), we get a palindrome (86533568).

The spelling of 40321264 in words is "forty million, three hundred twenty-one thousand, two hundred sixty-four".