23461520 has 20 divisors (see below), whose sum is σ = 54548220. Its totient is φ = 9384576.

The previous prime is 23461517. The next prime is 23461567. The reversal of 23461520 is 2516432.

It can be written as a sum of positive squares in 2 ways, for example, as 16128256 + 7333264 = 4016^2 + 2708^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146555 + ... + 146714.

It is an arithmetic number, because the mean of its divisors is an integer number (2727411).

Almost surely, 2^23461520 is an apocalyptic number.

23461520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23461520 is an abundant number, since it is smaller than the sum of its proper divisors (31086700).

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

23461520 is a wasteful number, since it uses less digits than its factorization.

23461520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293282 (or 293276 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23461520 is about 4843.7093224098. The cubic root of 23461520 is about 286.2762909435.

Adding to 23461520 its reverse (2516432), we get a palindrome (25977952).

The spelling of 23461520 in words is "twenty-three million, four hundred sixty-one thousand, five hundred twenty".