16040448 has 90 divisors (see below), whose sum is σ = 47091759. Its totient is φ = 5256192.

The previous prime is 16040441. The next prime is 16040449. The reversal of 16040448 is 84404061.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 8020224 + 8020224 = 2832^2 + 2832^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2832.

It is not an unprimeable number, because it can be changed into a prime (16040441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 271843 + ... + 271901.

Almost surely, 2^16040448 is an apocalyptic number.

16040448 is a gapful number since it is divisible by the number (18) 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 16040448

16040448 is an abundant number, since it is smaller than the sum of its proper divisors (31051311).

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

16040448 is an frugal number, since it uses more digits than its factorization.

16040448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 16040448 is about 4005.0528086406. The cubic root of 16040448 is about 252.1963699934.

The spelling of 16040448 in words is "sixteen million, forty thousand, four hundred forty-eight".