20707426 has 8 divisors (see below), whose sum is σ = 31570524. Its totient is φ = 10183920.

The previous prime is 20707403. The next prime is 20707433. The reversal of 20707426 is 62470702.

It can be written as a sum of positive squares in 2 ways, for example, as 14432401 + 6275025 = 3799^2 + 2505^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20707394 and 20707403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84745 + ... + 84988.

Almost surely, 2^20707426 is an apocalyptic number.

20707426 is a deficient number, since it is larger than the sum of its proper divisors (10863098).

20707426 is a wasteful number, since it uses less digits than its factorization.

20707426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169796.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20707426 is about 4550.5412864845. The cubic root of 20707426 is about 274.6051678249.

The spelling of 20707426 in words is "twenty million, seven hundred seven thousand, four hundred twenty-six".