20481826 has 8 divisors (see below), whose sum is σ = 30791340. Its totient is φ = 10218048.

The previous prime is 20481823. The next prime is 20481871. The reversal of 20481826 is 62818402.

It can be written as a sum of positive squares in 2 ways, for example, as 19368801 + 1113025 = 4401^2 + 1055^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20481823) 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, 10291 + ... + 12118.

Almost surely, 2^20481826 is an apocalyptic number.

20481826 is a deficient number, since it is larger than the sum of its proper divisors (10309514).

20481826 is a wasteful number, since it uses less digits than its factorization.

20481826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22868.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20481826 is about 4525.6851415007. The cubic root of 20481826 is about 273.6042825185.

The spelling of 20481826 in words is "twenty million, four hundred eighty-one thousand, eight hundred twenty-six".