20059780 has 24 divisors (see below), whose sum is σ = 45366552. Its totient is φ = 7406592.

The previous prime is 20059771. The next prime is 20059807. The reversal of 20059780 is 8795002.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 18800896 = 1122^2 + 4336^2 .

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, 38317 + ... + 38836.

It is an arithmetic number, because the mean of its divisors is an integer number (1890273).

Almost surely, 2^20059780 is an apocalyptic number.

20059780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20059780 is an abundant number, since it is smaller than the sum of its proper divisors (25306772).

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

20059780 is a wasteful number, since it uses less digits than its factorization.

20059780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77175 (or 77173 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 20059780 is about 4478.8145753090. The cubic root of 20059780 is about 271.7119391264.

The spelling of 20059780 in words is "twenty million, fifty-nine thousand, seven hundred eighty".