20702 has 8 divisors (see below), whose sum is σ = 33912. Its totient is φ = 9400.

The previous prime is 20693. The next prime is 20707.

20702 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a plaindrome in base 14.

It is a nialpdrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 20702.

It is not an unprimeable number, because it can be changed into a prime (20707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (4239).

2²⁰⁷⁰² is an apocalyptic number.

20702 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20702 is a deficient number, since it is larger than the sum of its proper divisors (13210).

20702 is a wasteful number, since it uses less digits than its factorization.

20702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 20702 is about 143.8818960120. The cubic root of 20702 is about 27.4581180652.

Multiplying 20702 by its sum of digits (11), we get a palindrome (227722).

The spelling of 20702 in words is "twenty thousand, seven hundred two", and thus it is an iban number.