23120436 has 12 divisors (see below), whose sum is σ = 53947712. Its totient is φ = 7706808.

The previous prime is 23120431. The next prime is 23120443. The reversal of 23120436 is 63402132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963340 + ... + 963363.

Almost surely, 2^23120436 is an apocalyptic number.

It is an amenable number.

23120436 is an abundant number, since it is smaller than the sum of its proper divisors (30827276).

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

23120436 is a wasteful number, since it uses less digits than its factorization.

23120436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926710 (or 1926708 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 23120436 is about 4808.3714498778. The cubic root of 23120436 is about 284.8822166422.

Adding to 23120436 its reverse (63402132), we get a palindrome (86522568).

The spelling of 23120436 in words is "twenty-three million, one hundred twenty thousand, four hundred thirty-six".