20708494 has 24 divisors (see below), whose sum is σ = 33066360. Its totient is φ = 9713088.

The previous prime is 20708489. The next prime is 20708497. The reversal of 20708494 is 49480702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20708497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283642 + ... + 283714.

It is an arithmetic number, because the mean of its divisors is an integer number (1377765).

Almost surely, 2^20708494 is an apocalyptic number.

20708494 is a deficient number, since it is larger than the sum of its proper divisors (12357866).

20708494 is an equidigital number, since it uses as much as digits as its factorization.

20708494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20708494 is about 4550.6586336485. The cubic root of 20708494 is about 274.6098887284.

The spelling of 20708494 in words is "twenty million, seven hundred eight thousand, four hundred ninety-four".