20347102 has 4 divisors (see below), whose sum is σ = 30520656. Its totient is φ = 10173550.

The previous prime is 20347073. The next prime is 20347121. The reversal of 20347102 is 20174302.

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

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20347102.

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, 5086774 + ... + 5086777.

It is an arithmetic number, because the mean of its divisors is an integer number (7630164).

Almost surely, 2^20347102 is an apocalyptic number.

20347102 is a deficient number, since it is larger than the sum of its proper divisors (10173554).

20347102 is a wasteful number, since it uses less digits than its factorization.

20347102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10173553.

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

The square root of 20347102 is about 4510.7762081487. The cubic root of 20347102 is about 273.0030636500.

It can be divided in two parts, 20347 and 102, that added together give a square (20449 = 143²).

The spelling of 20347102 in words is "twenty million, three hundred forty-seven thousand, one hundred two".