23947285 has 8 divisors (see below), whose sum is σ = 29130840. Its totient is φ = 18895104.

The previous prime is 23947279. The next prime is 23947289. The reversal of 23947285 is 58274932.

It can be written as a sum of positive squares in 4 ways, for example, as 7447441 + 16499844 = 2729^2 + 4062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23947285 - 2⁹ = 23946773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23947289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32440 + ... + 33169.

It is an arithmetic number, because the mean of its divisors is an integer number (3641355).

Almost surely, 2^23947285 is an apocalyptic number.

It is an amenable number.

23947285 is a deficient number, since it is larger than the sum of its proper divisors (5183555).

23947285 is an equidigital number, since it uses as much as digits as its factorization.

23947285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65687.

The product of its digits is 120960, while the sum is 40.

The square root of 23947285 is about 4893.5963258119. The cubic root of 23947285 is about 288.2385698438.

It can be divided in two parts, 239 and 47285, that added together give a square (47524 = 218²).

The spelling of 23947285 in words is "twenty-three million, nine hundred forty-seven thousand, two hundred eighty-five".