161414428 has 30 divisors (see below), whose sum is σ = 329554456. Its totient is φ = 69177612.

The previous prime is 161414423. The next prime is 161414441. The reversal of 161414428 is 824414161.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 161414428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161414423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23059201 + ... + 23059207.

Almost surely, 2^161414428 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 161414428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164777228).

161414428 is an abundant number, since it is smaller than the sum of its proper divisors (168140028).

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

161414428 is an frugal number, since it uses more digits than its factorization.

161414428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 9 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 161414428 is about 12704.8977957322. The cubic root of 161414428 is about 544.4785608251.

Adding to 161414428 its reverse (824414161), we get a palindrome (985828589).

The spelling of 161414428 in words is "one hundred sixty-one million, four hundred fourteen thousand, four hundred twenty-eight".