20540338 has 16 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 8125776.

The previous prime is 20540329. The next prime is 20540339. The reversal of 20540338 is 83304502.

It is not an unprimeable number, because it can be changed into a prime (20540339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56248 + ... + 56611.

It is an arithmetic number, because the mean of its divisors is an integer number (2370060).

Almost surely, 2^20540338 is an apocalyptic number.

20540338 is a deficient number, since it is larger than the sum of its proper divisors (17380622).

20540338 is a wasteful number, since it uses less digits than its factorization.

20540338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112881.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20540338 is about 4532.1449667900. The cubic root of 20540338 is about 273.8645769064.

The spelling of 20540338 in words is "twenty million, five hundred forty thousand, three hundred thirty-eight".