20514389 has 12 divisors (see below), whose sum is σ = 23940000. Its totient is φ = 17527608.

The previous prime is 20514383. The next prime is 20514401. The reversal of 20514389 is 98341502.

It is not a de Polignac number, because 20514389 - 2¹⁶ = 20448853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514383) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24032 + ... + 24870.

It is an arithmetic number, because the mean of its divisors is an integer number (1995000).

Almost surely, 2^20514389 is an apocalyptic number.

It is an amenable number.

20514389 is a deficient number, since it is larger than the sum of its proper divisors (3425611).

20514389 is an equidigital number, since it uses as much as digits as its factorization.

20514389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352 (or 1345 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 20514389 is about 4529.2812895646. The cubic root of 20514389 is about 273.7492021967.

The spelling of 20514389 in words is "twenty million, five hundred fourteen thousand, three hundred eighty-nine".