40304073 has 32 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 23950080.

The previous prime is 40304057. The next prime is 40304081. The reversal of 40304073 is 37040304.

It is not a de Polignac number, because 40304073 - 2⁴ = 40304057 is a prime.

It is a super-3 number, since 3×40304073³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40304083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92865 + ... + 93297.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^40304073 is an apocalyptic number.

It is an amenable number.

40304073 is a deficient number, since it is larger than the sum of its proper divisors (19692087).

40304073 is a wasteful number, since it uses less digits than its factorization.

40304073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 40304073 is about 6348.5488893132. The cubic root of 40304073 is about 342.8595985191.

Adding to 40304073 its reverse (37040304), we get a palindrome (77344377).

The spelling of 40304073 in words is "forty million, three hundred four thousand, seventy-three".