23145150 has 144 divisors (see below), whose sum is σ = 69209856. Its totient is φ = 5100480.

The previous prime is 23145119. The next prime is 23145167. The reversal of 23145150 is 5154132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 345417 + ... + 345483.

It is an arithmetic number, because the mean of its divisors is an integer number (480624).

Almost surely, 2^23145150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23145150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34604928).

23145150 is an abundant number, since it is smaller than the sum of its proper divisors (46064706).

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

23145150 is a wasteful number, since it uses less digits than its factorization.

23145150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 23145150 is about 4810.9406564621. The cubic root of 23145150 is about 284.9836863546.

Adding to 23145150 its reverse (5154132), we get a palindrome (28299282).

The spelling of 23145150 in words is "twenty-three million, one hundred forty-five thousand, one hundred fifty".