19992106 has 8 divisors (see below), whose sum is σ = 31292064. Its totient is φ = 9561420.

The previous prime is 19992103. The next prime is 19992131. The reversal of 19992106 is 60129991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19992103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217260 + ... + 217351.

It is an arithmetic number, because the mean of its divisors is an integer number (3911508).

Almost surely, 2^19992106 is an apocalyptic number.

19992106 is a deficient number, since it is larger than the sum of its proper divisors (11299958).

19992106 is a wasteful number, since it uses less digits than its factorization.

19992106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434636.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 19992106 is about 4471.2532918635. The cubic root of 19992106 is about 271.4060442721.

The spelling of 19992106 in words is "nineteen million, nine hundred ninety-two thousand, one hundred six".