19489734 has 40 divisors (see below), whose sum is σ = 47645928. Its totient is φ = 5905440.

The previous prime is 19489727. The next prime is 19489739. The reversal of 19489734 is 43798491.

It is a self number, because there is not a number n which added to its sum of digits gives 19489734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19489739) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3687 + ... + 7250.

Almost surely, 2^19489734 is an apocalyptic number.

19489734 is an abundant number, since it is smaller than the sum of its proper divisors (28156194).

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

19489734 is a wasteful number, since it uses less digits than its factorization.

19489734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10962 (or 10953 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19489734 is about 4414.7178845312. The cubic root of 19489734 is about 269.1133880730.

The spelling of 19489734 in words is "nineteen million, four hundred eighty-nine thousand, seven hundred thirty-four".