40305573 has 32 divisors (see below), whose sum is σ = 74449920. Its totient is φ = 20936880.

The previous prime is 40305571. The next prime is 40305613. The reversal of 40305573 is 37550304.

It is a happy number.

It is not a de Polignac number, because 40305573 - 2¹ = 40305571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40305571) 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, 7615 + ... + 11772.

It is an arithmetic number, because the mean of its divisors is an integer number (2326560).

Almost surely, 2^40305573 is an apocalyptic number.

It is an amenable number.

40305573 is a deficient number, since it is larger than the sum of its proper divisors (34144347).

40305573 is a wasteful number, since it uses less digits than its factorization.

40305573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19414 (or 19408 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 40305573 is about 6348.6670254472. The cubic root of 40305573 is about 342.8638518776.

Adding to 40305573 its reverse (37550304), we get a palindrome (77855877).

The spelling of 40305573 in words is "forty million, three hundred five thousand, five hundred seventy-three".