19490088 has 64 divisors (see below), whose sum is σ = 51710400. Its totient is φ = 6110720.

The previous prime is 19490087. The next prime is 19490123. The reversal of 19490088 is 88009491.

It is not an unprimeable number, because it can be changed into a prime (19490087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28195 + ... + 28877.

It is an arithmetic number, because the mean of its divisors is an integer number (807975).

Almost surely, 2^19490088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19490088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25855200).

19490088 is an abundant number, since it is smaller than the sum of its proper divisors (32220312).

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

19490088 is a wasteful number, since it uses less digits than its factorization.

19490088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 19490088 is about 4414.7579775113. The cubic root of 19490088 is about 269.1150174020.

The spelling of 19490088 in words is "nineteen million, four hundred ninety thousand, eighty-eight".