15380623 has 2 divisors, whose sum is σ = 15380624. Its totient is φ = 15380622.

The previous prime is 15380591. The next prime is 15380669. The reversal of 15380623 is 32608351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15380623 - 2⁵ = 15380591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15380591 and 15380600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15380683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7690311 + 7690312.

It is an arithmetic number, because the mean of its divisors is an integer number (7690312).

Almost surely, 2^15380623 is an apocalyptic number.

15380623 is a deficient number, since it is larger than the sum of its proper divisors (1).

15380623 is an equidigital number, since it uses as much as digits as its factorization.

15380623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 15380623 is about 3921.8137385654. The cubic root of 15380623 is about 248.6898015150.

Adding to 15380623 its reverse (32608351), we get a palindrome (47988974).

The spelling of 15380623 in words is "fifteen million, three hundred eighty thousand, six hundred twenty-three".