20006492 has 24 divisors (see below), whose sum is σ = 39229680. Its totient is φ = 8847360.

The previous prime is 20006489. The next prime is 20006507. The reversal of 20006492 is 29460002.

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, 4517 + ... + 7772.

It is an arithmetic number, because the mean of its divisors is an integer number (1634570).

Almost surely, 2^20006492 is an apocalyptic number.

20006492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20006492 is a deficient number, since it is larger than the sum of its proper divisors (19223188).

20006492 is a wasteful number, since it uses less digits than its factorization.

20006492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12341 (or 12339 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20006492 is about 4472.8617237737. The cubic root of 20006492 is about 271.4711284808.

Adding to 20006492 its reverse (29460002), we get a palindrome (49466494).

The spelling of 20006492 in words is "twenty million, six thousand, four hundred ninety-two".