23512340 has 12 divisors (see below), whose sum is σ = 49375956. Its totient is φ = 9404928.

The previous prime is 23512339. The next prime is 23512369. The reversal of 23512340 is 4321532.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17272336 + 6240004 = 4156^2 + 2498^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1175617 = 23512340 / (2 + 3 + 5 + 1 + 2 + 3 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587789 + ... + 587828.

It is an arithmetic number, because the mean of its divisors is an integer number (4114663).

Almost surely, 2^23512340 is an apocalyptic number.

23512340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23512340 is an abundant number, since it is smaller than the sum of its proper divisors (25863616).

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

23512340 is a wasteful number, since it uses less digits than its factorization.

23512340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175626 (or 1175624 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23512340 is about 4848.9524641927. The cubic root of 23512340 is about 286.4828429086.

Adding to 23512340 its reverse (4321532), we get a palindrome (27833872).

The spelling of 23512340 in words is "twenty-three million, five hundred twelve thousand, three hundred forty".