20146426 has 8 divisors (see below), whose sum is σ = 31036500. Its totient is φ = 9800928.

The previous prime is 20146421. The next prime is 20146433. The reversal of 20146426 is 62464102.

It can be written as a sum of positive squares in 2 ways, for example, as 14861025 + 5285401 = 3855^2 + 2299^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20146426.

It is not an unprimeable number, because it can be changed into a prime (20146421) 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, 136051 + ... + 136198.

Almost surely, 2^20146426 is an apocalyptic number.

20146426 is a deficient number, since it is larger than the sum of its proper divisors (10890074).

20146426 is a wasteful number, since it uses less digits than its factorization.

20146426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272288.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20146426 is about 4488.4770245597. The cubic root of 20146426 is about 272.1025870965.

The spelling of 20146426 in words is "twenty million, one hundred forty-six thousand, four hundred twenty-six".