20492586 has 24 divisors (see below), whose sum is σ = 46332000. Its totient is φ = 6533736.

The previous prime is 20492569. The next prime is 20492603. The reversal of 20492586 is 68529402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20492569) and next prime (20492603).

It is a self number, because there is not a number n which added to its sum of digits gives 20492586.

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 11 ways as a sum of consecutive naturals, for example, 24336 + ... + 25163.

It is an arithmetic number, because the mean of its divisors is an integer number (1930500).

Almost surely, 2^20492586 is an apocalyptic number.

20492586 is an abundant number, since it is smaller than the sum of its proper divisors (25839414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20492586 is a wasteful number, since it uses less digits than its factorization.

20492586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49530 (or 49527 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 20492586 is about 4526.8737556950. The cubic root of 20492586 is about 273.6521862340.

The spelling of 20492586 in words is "twenty million, four hundred ninety-two thousand, five hundred eighty-six".