20320702 has 4 divisors (see below), whose sum is σ = 30481056. Its totient is φ = 10160350.

The previous prime is 20320687. The next prime is 20320711. The reversal of 20320702 is 20702302.

It is a happy number.

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

It is a super-3 number, since 3×20320702³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080174 + ... + 5080177.

It is an arithmetic number, because the mean of its divisors is an integer number (7620264).

Almost surely, 2^20320702 is an apocalyptic number.

20320702 is a deficient number, since it is larger than the sum of its proper divisors (10160354).

20320702 is a wasteful number, since it uses less digits than its factorization.

20320702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160353.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 20320702 is about 4507.8489326951. The cubic root of 20320702 is about 272.8849403544.

The spelling of 20320702 in words is "twenty million, three hundred twenty thousand, seven hundred two".