161306200 has 192 divisors, whose sum is σ = 458006400. Its totient is φ = 52070400.

The previous prime is 161306147. The next prime is 161306221. The reversal of 161306200 is 2603161.

161306200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 710487 + ... + 710713.

It is an arithmetic number, because the mean of its divisors is an integer number (2385450).

Almost surely, 2^161306200 is an apocalyptic number.

161306200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161306200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229003200).

161306200 is an abundant number, since it is smaller than the sum of its proper divisors (296700200).

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

161306200 is a wasteful number, since it uses less digits than its factorization.

161306200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 161306200 is about 12700.6377792613. The cubic root of 161306200 is about 544.3568430794.

Adding to 161306200 its reverse (2603161), we get a palindrome (163909361).

The spelling of 161306200 in words is "one hundred sixty-one million, three hundred six thousand, two hundred".