16272405 has 24 divisors (see below), whose sum is σ = 28304640. Its totient is φ = 8648160.

The previous prime is 16272343. The next prime is 16272433. The reversal of 16272405 is 50427261.

It is not a de Polignac number, because 16272405 - 2⁸ = 16272149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18976 + ... + 19814.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^16272405 is an apocalyptic number.

16272405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16272405 is a deficient number, since it is larger than the sum of its proper divisors (12032235).

16272405 is a wasteful number, since it uses less digits than its factorization.

16272405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 16272405 is about 4033.9069151382. The cubic root of 16272405 is about 253.4062069131.

Adding to 16272405 its reverse (50427261), we get a palindrome (66699666).

The spelling of 16272405 in words is "sixteen million, two hundred seventy-two thousand, four hundred five".