20307702 has 8 divisors (see below), whose sum is σ = 40615416. Its totient is φ = 6769232.

The previous prime is 20307691. The next prime is 20307719. The reversal of 20307702 is 20770302.

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

20307702 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1692303 + ... + 1692314.

It is an arithmetic number, because the mean of its divisors is an integer number (5076927).

Almost surely, 2^20307702 is an apocalyptic number.

20307702 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20307702 is a wasteful number, since it uses less digits than its factorization.

20307702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384622.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 20307702 is about 4506.4067725850. The cubic root of 20307702 is about 272.8267359841.

The spelling of 20307702 in words is "twenty million, three hundred seven thousand, seven hundred two".