16403072 has 32 divisors (see below), whose sum is σ = 37348320. Its totient is φ = 7029504.

The previous prime is 16403053. The next prime is 16403077. The reversal of 16403072 is 27030461.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (16403077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8258 + ... + 10049.

It is an arithmetic number, because the mean of its divisors is an integer number (1167135).

Almost surely, 2^16403072 is an apocalyptic number.

It is an amenable number.

16403072 is an abundant number, since it is smaller than the sum of its proper divisors (20945248).

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

16403072 is an equidigital number, since it uses as much as digits as its factorization.

16403072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18328 (or 18316 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 16403072 is about 4050.0706166683. The cubic root of 16403072 is about 254.0826812484.

The spelling of 16403072 in words is "sixteen million, four hundred three thousand, seventy-two".