23061520 has 80 divisors (see below), whose sum is σ = 58710528. Its totient is φ = 8386560.

The previous prime is 23061509. The next prime is 23061523. The reversal of 23061520 is 2516032.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (23061523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41887 + ... + 42433.

Almost surely, 2^23061520 is an apocalyptic number.

23061520 is a gapful number since it is divisible by the number (20) 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 23061520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29355264).

23061520 is an abundant number, since it is smaller than the sum of its proper divisors (35649008).

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

23061520 is a wasteful number, since it uses less digits than its factorization.

23061520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 23061520 is about 4802.2411434662. The cubic root of 23061520 is about 284.6400297814.

Adding to 23061520 its reverse (2516032), we get a palindrome (25577552).

The spelling of 23061520 in words is "twenty-three million, sixty-one thousand, five hundred twenty".