19400106 has 16 divisors (see below), whose sum is σ = 42327648. Its totient is φ = 5878800.

The previous prime is 19400089. The next prime is 19400113. The reversal of 19400106 is 60100491.

It is a super-2 number, since 2×19400106² = 752728225622472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146905 + ... + 147036.

It is an arithmetic number, because the mean of its divisors is an integer number (2645478).

Almost surely, 2^19400106 is an apocalyptic number.

19400106 is an abundant number, since it is smaller than the sum of its proper divisors (22927542).

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

19400106 is a wasteful number, since it uses less digits than its factorization.

19400106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293957.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 19400106 is about 4404.5551421228. Note that the first 3 decimals coincide. The cubic root of 19400106 is about 268.7002275954.

Adding to 19400106 its reverse (60100491), we get a palindrome (79500597).

The spelling of 19400106 in words is "nineteen million, four hundred thousand, one hundred six".