20723102 has 8 divisors (see below), whose sum is σ = 32913216. Its totient is φ = 9752032.

The previous prime is 20723083. The next prime is 20723107. The reversal of 20723102 is 20132702.

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 (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20723107) 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, 304718 + ... + 304785.

It is an arithmetic number, because the mean of its divisors is an integer number (4114152).

Almost surely, 2^20723102 is an apocalyptic number.

20723102 is a deficient number, since it is larger than the sum of its proper divisors (12190114).

20723102 is a wasteful number, since it uses less digits than its factorization.

20723102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609522.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20723102 is about 4552.2633930826. The cubic root of 20723102 is about 274.6744444991.

Adding to 20723102 its reverse (20132702), we get a palindrome (40855804).

The spelling of 20723102 in words is "twenty million, seven hundred twenty-three thousand, one hundred two".