20552426 has 8 divisors (see below), whose sum is σ = 30909060. Its totient is φ = 10249408.

The previous prime is 20552423. The next prime is 20552447. The reversal of 20552426 is 62425502.

It can be written as a sum of positive squares in 2 ways, for example, as 18447025 + 2105401 = 4295^2 + 1451^2 .

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 = 20552395 and 20552404.

It is not an unprimeable number, because it can be changed into a prime (20552423) 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, 12431 + ... + 13986.

Almost surely, 2^20552426 is an apocalyptic number.

20552426 is a deficient number, since it is larger than the sum of its proper divisors (10356634).

20552426 is a wasteful number, since it uses less digits than its factorization.

20552426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26808.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20552426 is about 4533.4783555235. The cubic root of 20552426 is about 273.9182895216.

Adding to 20552426 its reverse (62425502), we get a palindrome (82977928).

The spelling of 20552426 in words is "twenty million, five hundred fifty-two thousand, four hundred twenty-six".