19920006 has 20 divisors (see below), whose sum is σ = 44635932. Its totient is φ = 6639948.

The previous prime is 19919989. The next prime is 19920031. The reversal of 19920006 is 60002991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61320 + ... + 61643.

Almost surely, 2^19920006 is an apocalyptic number.

19920006 is an abundant number, since it is smaller than the sum of its proper divisors (24715926).

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

19920006 is a wasteful number, since it uses less digits than its factorization.

19920006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122977 (or 122968 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19920006 is about 4463.1833930503. The cubic root of 19920006 is about 271.0793828890.

Adding to 19920006 its reverse (60002991), we get a palindrome (79922997).

The spelling of 19920006 in words is "nineteen million, nine hundred twenty thousand, six".