16498440 has 96 divisors (see below), whose sum is σ = 61289280. Its totient is φ = 3770496.

The previous prime is 16498421. The next prime is 16498453. The reversal of 16498440 is 4489461.

It is a happy number.

16498440 is a `hidden beast` number, since 1 + 649 + 8 + 4 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16498395 and 16498404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 754 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (638430).

Almost surely, 2^16498440 is an apocalyptic number.

16498440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16498440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30644640).

16498440 is an abundant number, since it is smaller than the sum of its proper divisors (44790840).

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

16498440 is a wasteful number, since it uses less digits than its factorization.

16498440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6571 (or 6564 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 16498440 is about 4061.8271750531. The cubic root of 16498440 is about 254.5741450345.

The spelling of 16498440 in words is "sixteen million, four hundred ninety-eight thousand, four hundred forty".