16390452 has 48 divisors (see below), whose sum is σ = 42618240. Its totient is φ = 4867968.

The previous prime is 16390441. The next prime is 16390453. The reversal of 16390452 is 25409361.

16390452 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390453) 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, 2713 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (887880).

Almost surely, 2^16390452 is an apocalyptic number.

16390452 is a gapful number since it is divisible by the number (12) 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 16390452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21309120).

16390452 is an abundant number, since it is smaller than the sum of its proper divisors (26227788).

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

16390452 is a wasteful number, since it uses less digits than its factorization.

16390452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672 (or 3670 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 16390452 is about 4048.5123193588. The cubic root of 16390452 is about 254.0175034955.

The spelling of 16390452 in words is "sixteen million, three hundred ninety thousand, four hundred fifty-two".