40012273 has 12 divisors (see below), whose sum is σ = 46704432. Its totient is φ = 34178760.

The previous prime is 40012267. The next prime is 40012277. The reversal of 40012273 is 37221004.

It is a de Polignac number, because none of the positive numbers 2^k-40012273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40012273.

It is not an unprimeable number, because it can be changed into a prime (40012277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14986 + ... + 17452.

It is an arithmetic number, because the mean of its divisors is an integer number (3892036).

Almost surely, 2^40012273 is an apocalyptic number.

It is an amenable number.

40012273 is a deficient number, since it is larger than the sum of its proper divisors (6692159).

40012273 is a wasteful number, since it uses less digits than its factorization.

40012273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812 (or 2805 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 40012273 is about 6325.5255117658. The cubic root of 40012273 is about 342.0301633166.

Adding to 40012273 its reverse (37221004), we get a palindrome (77233277).

The spelling of 40012273 in words is "forty million, twelve thousand, two hundred seventy-three".