20703380 has 24 divisors (see below), whose sum is σ = 43637832. Its totient is φ = 8250752.

The previous prime is 20703379. The next prime is 20703383. The reversal of 20703380 is 8330702.

It can be written as a sum of positive squares in 4 ways, for example, as 10023556 + 10679824 = 3166^2 + 3268^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703383) 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, 4094 + ... + 7626.

It is an arithmetic number, because the mean of its divisors is an integer number (1818243).

Almost surely, 2^20703380 is an apocalyptic number.

20703380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20703380 is an abundant number, since it is smaller than the sum of its proper divisors (22934452).

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

20703380 is a wasteful number, since it uses less digits than its factorization.

20703380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20703380 is about 4550.0967022691. The cubic root of 20703380 is about 274.5872817313.

The spelling of 20703380 in words is "twenty million, seven hundred three thousand, three hundred eighty".