40481812 has 24 divisors (see below), whose sum is σ = 81992960. Its totient is φ = 17128800.

The previous prime is 40481809. The next prime is 40481849. The reversal of 40481812 is 21818404.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6939 + ... + 11362.

Almost surely, 2^40481812 is an apocalyptic number.

It is an amenable number.

40481812 is an abundant number, since it is smaller than the sum of its proper divisors (41511148).

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

40481812 is a wasteful number, since it uses less digits than its factorization.

40481812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18391 (or 18389 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 40481812 is about 6362.5318859712. The cubic root of 40481812 is about 343.3628575065.

The spelling of 40481812 in words is "forty million, four hundred eighty-one thousand, eight hundred twelve".