23512020 has 192 divisors, whose sum is σ = 82736640. Its totient is φ = 4866048.

The previous prime is 23512009. The next prime is 23512033. The reversal of 23512020 is 2021532.

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

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 63 ways as a sum of consecutive naturals, for example, 264136 + ... + 264224.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^23512020 is an apocalyptic number.

23512020 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 23512020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41368320).

23512020 is an abundant number, since it is smaller than the sum of its proper divisors (59224620).

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

23512020 is a wasteful number, since it uses less digits than its factorization.

23512020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 23512020 is about 4848.9194672628. The cubic root of 23512020 is about 286.4815432375.

Adding to 23512020 its reverse (2021532), we get a palindrome (25533552).

It can be divided in two parts, 2351 and 2020, that added together give a triangular number (4371 = T₉₃).

The spelling of 23512020 in words is "twenty-three million, five hundred twelve thousand, twenty".