23001516 has 48 divisors (see below), whose sum is σ = 60328800. Its totient is φ = 7577856.

The previous prime is 23001509. The next prime is 23001551. The reversal of 23001516 is 61510032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8416 + ... + 10808.

It is an arithmetic number, because the mean of its divisors is an integer number (1256850).

Almost surely, 2^23001516 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 23001516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30164400).

23001516 is an abundant number, since it is smaller than the sum of its proper divisors (37327284).

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

23001516 is a wasteful number, since it uses less digits than its factorization.

23001516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495 (or 2487 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 23001516 is about 4795.9895746342. The cubic root of 23001516 is about 284.3929461121.

Adding to 23001516 its reverse (61510032), we get a palindrome (84511548).

The spelling of 23001516 in words is "twenty-three million, one thousand, five hundred sixteen".