40078036 has 12 divisors (see below), whose sum is σ = 70182112. Its totient is φ = 20026008.

The previous prime is 40078019. The next prime is 40078039. The reversal of 40078036 is 63087004.

It is a junction number, because it is equal to n+sod(n) for n = 40077995 and 40078013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40078039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8011 + ... + 12013.

Almost surely, 2^40078036 is an apocalyptic number.

It is an amenable number.

40078036 is a deficient number, since it is larger than the sum of its proper divisors (30104076).

40078036 is a wasteful number, since it uses less digits than its factorization.

40078036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510 (or 6508 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40078036 is about 6330.7216018397. The cubic root of 40078036 is about 342.2174443371.

The spelling of 40078036 in words is "forty million, seventy-eight thousand, thirty-six".