20487514 has 16 divisors (see below), whose sum is σ = 32335200. Its totient is φ = 9721264.

The previous prime is 20487487. The next prime is 20487517. The reversal of 20487514 is 41578402.

It is not an unprimeable number, because it can be changed into a prime (20487517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (2020950).

Almost surely, 2^20487514 is an apocalyptic number.

20487514 is a deficient number, since it is larger than the sum of its proper divisors (11847686).

20487514 is a wasteful number, since it uses less digits than its factorization.

20487514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 20487514 is about 4526.3135110153. The cubic root of 20487514 is about 273.6296076876.

The spelling of 20487514 in words is "twenty million, four hundred eighty-seven thousand, five hundred fourteen".