16159428 has 18 divisors (see below), whose sum is σ = 40847534. Its totient is φ = 5386464.

The previous prime is 16159427. The next prime is 16159441. The reversal of 16159428 is 82495161.

16159428 is a `hidden beast` number, since 1 + 61 + 594 + 2 + 8 = 666.

16159428 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 can be written as a sum of positive squares in only one way, i.e., 13089924 + 3069504 = 3618^2 + 1752^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×16159428² = 522254226574368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 448873 = 16159428 / (1 + 6 + 1 + 5 + 9 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 16159392 and 16159401.

It is not an unprimeable number, because it can be changed into a prime (16159427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 224401 + ... + 224472.

Almost surely, 2^16159428 is an apocalyptic number.

16159428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16159428 is an abundant number, since it is smaller than the sum of its proper divisors (24688106).

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

16159428 is a wasteful number, since it uses less digits than its factorization.

16159428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448883 (or 448878 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 16159428 is about 4019.8791026597. The cubic root of 16159428 is about 252.8183899790.

The spelling of 16159428 in words is "sixteen million, one hundred fifty-nine thousand, four hundred twenty-eight".