20703340 has 24 divisors (see below), whose sum is σ = 49688352. Its totient is φ = 7098240.

The previous prime is 20703329. The next prime is 20703341. The reversal of 20703340 is 4330702.

It is not an unprimeable number, because it can be changed into a prime (20703341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73801 + ... + 74080.

It is an arithmetic number, because the mean of its divisors is an integer number (2070348).

Almost surely, 2^20703340 is an apocalyptic number.

20703340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20703340 is an abundant number, since it is smaller than the sum of its proper divisors (28985012).

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

20703340 is a wasteful number, since it uses less digits than its factorization.

20703340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147897 (or 147895 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20703340 is about 4550.0923067560. The cubic root of 20703340 is about 274.5871048923.

The spelling of 20703340 in words is "twenty million, seven hundred three thousand, three hundred forty".