40038012 has 36 divisors (see below), whose sum is σ = 115666096. Its totient is φ = 11439360.

The previous prime is 40038001. The next prime is 40038013. The reversal of 40038012 is 21083004.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40038013) 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, 79189 + ... + 79692.

Almost surely, 2^40038012 is an apocalyptic number.

40038012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40038012 is an abundant number, since it is smaller than the sum of its proper divisors (75628084).

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

40038012 is a wasteful number, since it uses less digits than its factorization.

40038012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158898 (or 158893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 40038012 is about 6327.5597191967. The cubic root of 40038012 is about 342.1034877134.

The spelling of 40038012 in words is "forty million, thirty-eight thousand, twelve".