23420277 has 12 divisors (see below), whose sum is σ = 33940140. Its totient is φ = 15562368.

The previous prime is 23420263. The next prime is 23420281. The reversal of 23420277 is 77202432.

It can be written as a sum of positive squares in 2 ways, for example, as 1461681 + 21958596 = 1209^2 + 4686^2 .

It is not a de Polignac number, because 23420277 - 2⁶ = 23420213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23420277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1252 + ... + 6957.

It is an arithmetic number, because the mean of its divisors is an integer number (2828345).

Almost surely, 2^23420277 is an apocalyptic number.

It is an amenable number.

23420277 is a deficient number, since it is larger than the sum of its proper divisors (10519863).

23420277 is a wasteful number, since it uses less digits than its factorization.

23420277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8532 (or 8529 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 23420277 is about 4839.4500720640. The cubic root of 23420277 is about 286.1084442129.

The spelling of 23420277 in words is "twenty-three million, four hundred twenty thousand, two hundred seventy-seven".