16161428 has 12 divisors (see below), whose sum is σ = 28623840. Its totient is φ = 7983192.

The previous prime is 16161427. The next prime is 16161437. The reversal of 16161428 is 82416161.

It is a super-2 number, since 2×16161428² = 522383509998368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16161428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24008 + ... + 24671.

It is an arithmetic number, because the mean of its divisors is an integer number (2385320).

Almost surely, 2^16161428 is an apocalyptic number.

It is an amenable number.

16161428 is a deficient number, since it is larger than the sum of its proper divisors (12462412).

16161428 is a wasteful number, since it uses less digits than its factorization.

16161428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48766 (or 48764 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 16161428 is about 4020.1278586632. The cubic root of 16161428 is about 252.8288197195.

Adding to 16161428 its reverse (82416161), we get a palindrome (98577589).

The spelling of 16161428 in words is "sixteen million, one hundred sixty-one thousand, four hundred twenty-eight".