20540498 has 16 divisors (see below), whose sum is σ = 34394976. Its totient is φ = 9119040.

The previous prime is 20540491. The next prime is 20540503. The reversal of 20540498 is 89404502.

It is not an unprimeable number, because it can be changed into a prime (20540491) 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, 9911 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (2149686).

Almost surely, 2^20540498 is an apocalyptic number.

20540498 is a deficient number, since it is larger than the sum of its proper divisors (13854478).

20540498 is a wasteful number, since it uses less digits than its factorization.

20540498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21769.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20540498 is about 4532.1626184417. The cubic root of 20540498 is about 273.8652879986.

It can be divided in two parts, 205404 and 98, that added together give a palindrome (205502).

The spelling of 20540498 in words is "twenty million, five hundred forty thousand, four hundred ninety-eight".