40503820 has 48 divisors (see below), whose sum is σ = 102332160. Its totient is φ = 13155264.

The previous prime is 40503803. The next prime is 40503829. The reversal of 40503820 is 2830504.

It is a junction number, because it is equal to n+sod(n) for n = 40503791 and 40503800.

It is not an unprimeable number, because it can be changed into a prime (40503829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4954 + ... + 10273.

It is an arithmetic number, because the mean of its divisors is an integer number (2131920).

Almost surely, 2^40503820 is an apocalyptic number.

It is an amenable number.

40503820 is an abundant number, since it is smaller than the sum of its proper divisors (61828340).

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

40503820 is a wasteful number, since it uses less digits than its factorization.

40503820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15262 (or 15260 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40503820 is about 6364.2611511471. The cubic root of 40503820 is about 343.4250694843.

The spelling of 40503820 in words is "forty million, five hundred three thousand, eight hundred twenty".