40816780 has 24 divisors (see below), whose sum is σ = 85836240. Its totient is φ = 16303680.

The previous prime is 40816759. The next prime is 40816817. The reversal of 40816780 is 8761804.

It is a happy number.

It is a super-3 number, since 3×40816780³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24370 + ... + 25990.

It is an arithmetic number, because the mean of its divisors is an integer number (3576510).

Almost surely, 2^40816780 is an apocalyptic number.

It is an amenable number.

40816780 is an abundant number, since it is smaller than the sum of its proper divisors (45019460).

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

40816780 is a wasteful number, since it uses less digits than its factorization.

40816780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 40816780 is about 6388.8011394940. The cubic root of 40816780 is about 344.3073128146.

The spelling of 40816780 in words is "forty million, eight hundred sixteen thousand, seven hundred eighty".