20514998 has 16 divisors (see below), whose sum is σ = 35695104. Its totient is φ = 8660520.

The previous prime is 20514979. The next prime is 20515007. The reversal of 20514998 is 89941502.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9998 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (2230944).

Almost surely, 2^20514998 is an apocalyptic number.

20514998 is a deficient number, since it is larger than the sum of its proper divisors (15180106).

20514998 is a wasteful number, since it uses less digits than its factorization.

20514998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21947.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 20514998 is about 4529.3485182750. The cubic root of 20514998 is about 273.7519110533.

It can be divided in two parts, 20514 and 998, that added together give a palindrome (21512).

The spelling of 20514998 in words is "twenty million, five hundred fourteen thousand, nine hundred ninety-eight".