20206702 has 4 divisors (see below), whose sum is σ = 30310056. Its totient is φ = 10103350.

The previous prime is 20206691. The next prime is 20206721. The reversal of 20206702 is 20760202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20206702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051674 + ... + 5051677.

It is an arithmetic number, because the mean of its divisors is an integer number (7577514).

Almost surely, 2^20206702 is an apocalyptic number.

20206702 is a deficient number, since it is larger than the sum of its proper divisors (10103354).

20206702 is a wasteful number, since it uses less digits than its factorization.

20206702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10103353.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20206702 is about 4495.1865367301. The cubic root of 20206702 is about 272.3736844072.

Adding to 20206702 its reverse (20760202), we get a palindrome (40966904).

The spelling of 20206702 in words is "twenty million, two hundred six thousand, seven hundred two".