40002812 has 12 divisors (see below), whose sum is σ = 70053816. Its totient is φ = 19987440.

The previous prime is 40002799. The next prime is 40002827. The reversal of 40002812 is 21820004.

40002812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5558 + ... + 10530.

It is an arithmetic number, because the mean of its divisors is an integer number (5837818).

Almost surely, 2^40002812 is an apocalyptic number.

It is an amenable number.

40002812 is a deficient number, since it is larger than the sum of its proper divisors (30051004).

40002812 is a wasteful number, since it uses less digits than its factorization.

40002812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988 (or 6986 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40002812 is about 6324.7776245493. Note that the first 3 decimals coincide. The cubic root of 40002812 is about 342.0032032348.

Adding to 40002812 its reverse (21820004), we get a palindrome (61822816).

The spelling of 40002812 in words is "forty million, two thousand, eight hundred twelve".