45199820 has 24 divisors (see below), whose sum is σ = 95046000. Its totient is φ = 18055872.

The previous prime is 45199813. The next prime is 45199849. The reversal of 45199820 is 2899154.

45199820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28406 + ... + 29954.

It is an arithmetic number, because the mean of its divisors is an integer number (3960250).

Almost surely, 2^45199820 is an apocalyptic number.

It is an amenable number.

45199820 is an abundant number, since it is smaller than the sum of its proper divisors (49846180).

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

45199820 is a wasteful number, since it uses less digits than its factorization.

45199820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017 (or 3015 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 45199820 is about 6723.0811388827. The cubic root of 45199820 is about 356.2150260116.

The spelling of 45199820 in words is "forty-five million, one hundred ninety-nine thousand, eight hundred twenty".