40662012 has 48 divisors (see below), whose sum is σ = 96885152. Its totient is φ = 13271040.

The previous prime is 40661993. The next prime is 40662019. The reversal of 40662012 is 21026604.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40662012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40662019) 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, 210588 + ... + 210780.

Almost surely, 2^40662012 is an apocalyptic number.

It is an amenable number.

40662012 is an abundant number, since it is smaller than the sum of its proper divisors (56223140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40662012 is a wasteful number, since it uses less digits than its factorization.

40662012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40662012 is about 6376.6771911396. The cubic root of 40662012 is about 343.8715831292.

Adding to 40662012 its reverse (21026604), we get a palindrome (61688616).

The spelling of 40662012 in words is "forty million, six hundred sixty-two thousand, twelve".