23478545 has 8 divisors (see below), whose sum is σ = 29145960. Its totient is φ = 18135040.

The previous prime is 23478517. The next prime is 23478551. The reversal of 23478545 is 54587432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43264 + 23435281 = 208^2 + 4841^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-23478545 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23478499 and 23478508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80816 + ... + 81105.

It is an arithmetic number, because the mean of its divisors is an integer number (3643245).

Almost surely, 2^23478545 is an apocalyptic number.

It is an amenable number.

23478545 is a deficient number, since it is larger than the sum of its proper divisors (5667415).

23478545 is a wasteful number, since it uses less digits than its factorization.

23478545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161955.

The product of its digits is 134400, while the sum is 38.

The square root of 23478545 is about 4845.4664378159. The cubic root of 23478545 is about 286.3455202661.

The spelling of 23478545 in words is "twenty-three million, four hundred seventy-eight thousand, five hundred forty-five".