40320033 has 16 divisors (see below), whose sum is σ = 60943680. Its totient is φ = 23505984.

The previous prime is 40320029. The next prime is 40320037. The reversal of 40320033 is 33002304.

It is an interprime number because it is at equal distance from previous prime (40320029) and next prime (40320037).

It is not a de Polignac number, because 40320033 - 2² = 40320029 is a prime.

It is a super-2 number, since 2×40320033² = 3251410122242178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40319994 and 40320021.

It is not an unprimeable number, because it can be changed into a prime (40320037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26466 + ... + 27947.

It is an arithmetic number, because the mean of its divisors is an integer number (3808980).

Almost surely, 2^40320033 is an apocalyptic number.

It is an amenable number.

40320033 is a deficient number, since it is larger than the sum of its proper divisors (20623647).

40320033 is a wasteful number, since it uses less digits than its factorization.

40320033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54448.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 40320033 is about 6349.8057450602. The cubic root of 40320033 is about 342.9048488429.

Adding to 40320033 its reverse (33002304), we get a palindrome (73322337).

The spelling of 40320033 in words is "forty million, three hundred twenty thousand, thirty-three".