20359426 has 4 divisors (see below), whose sum is σ = 30539142. Its totient is φ = 10179712.

The previous prime is 20359337. The next prime is 20359441. The reversal of 20359426 is 62495302.

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

It can be written as a sum of positive squares in only one way, i.e., 16933225 + 3426201 = 4115^2 + 1851^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5089855 + ... + 5089858.

Almost surely, 2^20359426 is an apocalyptic number.

20359426 is a deficient number, since it is larger than the sum of its proper divisors (10179716).

20359426 is a wasteful number, since it uses less digits than its factorization.

20359426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10179715.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 20359426 is about 4512.1420633664. The cubic root of 20359426 is about 273.0581707722.

The spelling of 20359426 in words is "twenty million, three hundred fifty-nine thousand, four hundred twenty-six".