23478247 has 8 divisors (see below), whose sum is σ = 25605440. Its totient is φ = 21396960.

The previous prime is 23478233. The next prime is 23478307. The reversal of 23478247 is 74287432.

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

It is not a de Polignac number, because 23478247 - 2¹¹ = 23476199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23478227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10404 + ... + 12457.

It is an arithmetic number, because the mean of its divisors is an integer number (3200680).

Almost surely, 2^23478247 is an apocalyptic number.

23478247 is a deficient number, since it is larger than the sum of its proper divisors (2127193).

23478247 is a wasteful number, since it uses less digits than its factorization.

23478247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22953.

The product of its digits is 75264, while the sum is 37.

The square root of 23478247 is about 4845.4356873247. The cubic root of 23478247 is about 286.3443087866.

The spelling of 23478247 in words is "twenty-three million, four hundred seventy-eight thousand, two hundred forty-seven".