19490912 has 24 divisors (see below), whose sum is σ = 43855056. Its totient is φ = 8353152.

The previous prime is 19490899. The next prime is 19490917. The reversal of 19490912 is 21909491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19490917) 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, 43283 + ... + 43730.

It is an arithmetic number, because the mean of its divisors is an integer number (1827294).

Almost surely, 2^19490912 is an apocalyptic number.

It is an amenable number.

19490912 is an abundant number, since it is smaller than the sum of its proper divisors (24364144).

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

19490912 is an equidigital number, since it uses as much as digits as its factorization.

19490912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87030 (or 87022 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 19490912 is about 4414.8512998741. The cubic root of 19490912 is about 269.1188098878.

It can be divided in two parts, 19490 and 912, that added together give a palindrome (20402).

The spelling of 19490912 in words is "nineteen million, four hundred ninety thousand, nine hundred twelve".