16288428 has 48 divisors (see below), whose sum is σ = 41218016. Its totient is φ = 4976640.

The previous prime is 16288387. The next prime is 16288429. The reversal of 16288428 is 82488261.

16288428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16288428² = 530625773422368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (16288429) 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, 29838 + ... + 30378.

Almost surely, 2^16288428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16288428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20609008).

16288428 is an abundant number, since it is smaller than the sum of its proper divisors (24929588).

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

16288428 is a wasteful number, since it uses less digits than its factorization.

16288428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 752 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 16288428 is about 4035.8924663573. The cubic root of 16288428 is about 253.4893537227.

The spelling of 16288428 in words is "sixteen million, two hundred eighty-eight thousand, four hundred twenty-eight".