16033440 has 48 divisors (see below), whose sum is σ = 50506848. Its totient is φ = 4275456.

The previous prime is 16033411. The next prime is 16033441. The reversal of 16033440 is 4433061.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (16033441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16222 + ... + 17181.

It is an arithmetic number, because the mean of its divisors is an integer number (1052226).

Almost surely, 2^16033440 is an apocalyptic number.

16033440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16033440 is an abundant number, since it is smaller than the sum of its proper divisors (34473408).

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

16033440 is a wasteful number, since it uses less digits than its factorization.

16033440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33421 (or 33413 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 16033440 is about 4004.1778182294. The cubic root of 16033440 is about 252.1596368213.

The spelling of 16033440 in words is "sixteen million, thirty-three thousand, four hundred forty".