20048780 has 24 divisors (see below), whose sum is σ = 44579808. Its totient is φ = 7547648.

The previous prime is 20048779. The next prime is 20048789. The reversal of 20048780 is 8784002.

20048780 is a modest number, since divided by 48780 gives 200 as remainder.

It is not an unprimeable number, because it can be changed into a prime (20048789) by changing a digit.

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, 29144 + ... + 29823.

It is an arithmetic number, because the mean of its divisors is an integer number (1857492).

Almost surely, 2^20048780 is an apocalyptic number.

20048780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20048780 is an abundant number, since it is smaller than the sum of its proper divisors (24531028).

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

20048780 is a wasteful number, since it uses less digits than its factorization.

20048780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58993 (or 58991 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 20048780 is about 4477.5864034098. The cubic root of 20048780 is about 271.6622646398.

The spelling of 20048780 in words is "twenty million, forty-eight thousand, seven hundred eighty".