20486494 has 16 divisors (see below), whose sum is σ = 35463168. Its totient is φ = 8694072.

The previous prime is 20486489. The next prime is 20486507. The reversal of 20486494 is 49468402.

It is a congruent number.

It is an unprimeable number.

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, 5662 + ... + 8545.

It is an arithmetic number, because the mean of its divisors is an integer number (2216448).

Almost surely, 2^20486494 is an apocalyptic number.

20486494 is a deficient number, since it is larger than the sum of its proper divisors (14976674).

20486494 is a wasteful number, since it uses less digits than its factorization.

20486494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14319.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 20486494 is about 4526.2008351376. The cubic root of 20486494 is about 273.6250665992.

The spelling of 20486494 in words is "twenty million, four hundred eighty-six thousand, four hundred ninety-four".