20700423 has 6 divisors (see below), whose sum is σ = 29900624. Its totient is φ = 13800276.

The previous prime is 20700413. The next prime is 20700451. The reversal of 20700423 is 32400702.

It is a happy number.

It is not a de Polignac number, because 20700423 - 2⁶ = 20700359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20700396 and 20700405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20700413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1150015 + ... + 1150032.

Almost surely, 2^20700423 is an apocalyptic number.

20700423 is a deficient number, since it is larger than the sum of its proper divisors (9200201).

20700423 is a wasteful number, since it uses less digits than its factorization.

20700423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300053 (or 2300050 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20700423 is about 4549.7717525168. The cubic root of 20700423 is about 274.5742082903.

It can be divided in two parts, 2070042 and 3, that multiplied together give a palindrome (6210126).

The spelling of 20700423 in words is "twenty million, seven hundred thousand, four hundred twenty-three".