23490547 has 2 divisors, whose sum is σ = 23490548. Its totient is φ = 23490546.

The previous prime is 23490541. The next prime is 23490611. The reversal of 23490547 is 74509432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23490547 - 2¹¹ = 23488499 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (23490541) 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 as a sum of consecutive naturals, namely, 11745273 + 11745274.

It is an arithmetic number, because the mean of its divisors is an integer number (11745274).

Almost surely, 2^23490547 is an apocalyptic number.

23490547 is a deficient number, since it is larger than the sum of its proper divisors (1).

23490547 is an equidigital number, since it uses as much as digits as its factorization.

23490547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 23490547 is about 4846.7047568425. The cubic root of 23490547 is about 286.3943042871.

Adding to 23490547 its reverse (74509432), we get a palindrome (97999979).

The spelling of 23490547 in words is "twenty-three million, four hundred ninety thousand, five hundred forty-seven".