19490480 has 20 divisors (see below), whose sum is σ = 45315552. Its totient is φ = 7796160.

The previous prime is 19490467. The next prime is 19490503. The reversal of 19490480 is 8409491.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 19490480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121736 + ... + 121895.

Almost surely, 2^19490480 is an apocalyptic number.

19490480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19490480 is an abundant number, since it is smaller than the sum of its proper divisors (25825072).

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

19490480 is a wasteful number, since it uses less digits than its factorization.

19490480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243644 (or 243638 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 19490480 is about 4414.8023738328. The cubic root of 19490480 is about 269.1168216076.

The spelling of 19490480 in words is "nineteen million, four hundred ninety thousand, four hundred eighty".