40320002 has 4 divisors (see below), whose sum is σ = 60480006. Its totient is φ = 20160000.

The previous prime is 40320001. The next prime is 40320011. The reversal of 40320002 is 20002304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40309801 + 10201 = 6349^2 + 101^2 .

It is a super-2 number, since 2×40320002² = 3251405122560008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40320001) 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, 10079999 + ... + 10080002.

Almost surely, 2^40320002 is an apocalyptic number.

40320002 is a deficient number, since it is larger than the sum of its proper divisors (20160004).

40320002 is a wasteful number, since it uses less digits than its factorization.

40320002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20160003.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 40320002 is about 6349.8033040402. The cubic root of 40320002 is about 342.9047609623.

Adding to 40320002 its reverse (20002304), we get a palindrome (60322306).

The spelling of 40320002 in words is "forty million, three hundred twenty thousand, two".