23161200 has 60 divisors (see below), whose sum is σ = 74196888. Its totient is φ = 6176000.

The previous prime is 23161199. The next prime is 23161241. The reversal of 23161200 is 216132.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23161200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8451 + ... + 10850.

Almost surely, 2^23161200 is an apocalyptic number.

23161200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23161200 is an abundant number, since it is smaller than the sum of its proper divisors (51035688).

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

23161200 is a wasteful number, since it uses less digits than its factorization.

23161200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19322 (or 19311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 23161200 is about 4812.6084403367. The cubic root of 23161200 is about 285.0495450953.

Adding to 23161200 its reverse (216132), we get a palindrome (23377332).

The spelling of 23161200 in words is "twenty-three million, one hundred sixty-one thousand, two hundred".