16381128 has 16 divisors (see below), whose sum is σ = 40952880. Its totient is φ = 5460368.

The previous prime is 16381111. The next prime is 16381133. The reversal of 16381128 is 82118361.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 16381095 and 16381104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341250 + ... + 341297.

It is an arithmetic number, because the mean of its divisors is an integer number (2559555).

Almost surely, 2^16381128 is an apocalyptic number.

It is an amenable number.

16381128 is an abundant number, since it is smaller than the sum of its proper divisors (24571752).

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

16381128 is a wasteful number, since it uses less digits than its factorization.

16381128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682556 (or 682552 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 16381128 is about 4047.3606214421. The cubic root of 16381128 is about 253.9693269014.

Adding to 16381128 its reverse (82118361), we get a palindrome (98499489).

The spelling of 16381128 in words is "sixteen million, three hundred eighty-one thousand, one hundred twenty-eight".