23012340 has 96 divisors (see below), whose sum is σ = 70202496. Its totient is φ = 5598720.

The previous prime is 23012333. The next prime is 23012347. The reversal of 23012340 is 4321032.

It is an interprime number because it is at equal distance from previous prime (23012333) and next prime (23012347).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127050 + ... + 127230.

It is an arithmetic number, because the mean of its divisors is an integer number (731276).

Almost surely, 2^23012340 is an apocalyptic number.

23012340 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 23012340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35101248).

23012340 is an abundant number, since it is smaller than the sum of its proper divisors (47190156).

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

23012340 is a wasteful number, since it uses less digits than its factorization.

23012340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23012340 is about 4797.1178847304. The cubic root of 23012340 is about 284.4375487740.

Adding to 23012340 its reverse (4321032), we get a palindrome (27333372).

The spelling of 23012340 in words is "twenty-three million, twelve thousand, three hundred forty".