20703940 has 12 divisors (see below), whose sum is σ = 43478316. Its totient is φ = 8281568.

The previous prime is 20703937. The next prime is 20703959. The reversal of 20703940 is 4930702.

It can be written as a sum of positive squares in 2 ways, for example, as 11847364 + 8856576 = 3442^2 + 2976^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517579 + ... + 517618.

It is an arithmetic number, because the mean of its divisors is an integer number (3623193).

Almost surely, 2^20703940 is an apocalyptic number.

20703940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20703940 is an abundant number, since it is smaller than the sum of its proper divisors (22774376).

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

20703940 is a wasteful number, since it uses less digits than its factorization.

20703940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035206 (or 1035204 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20703940 is about 4550.1582390066. The cubic root of 20703940 is about 274.5897574542.

The spelling of 20703940 in words is "twenty million, seven hundred three thousand, nine hundred forty".