16249971 has 8 divisors (see below), whose sum is σ = 21805264. Its totient is φ = 10764000.

The previous prime is 16249963. The next prime is 16250009. The reversal of 16249971 is 17994261.

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

It is not a de Polignac number, because 16249971 - 2³ = 16249963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16249901) 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, 16780 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (2725658).

Almost surely, 2^16249971 is an apocalyptic number.

16249971 is a deficient number, since it is larger than the sum of its proper divisors (5555293).

16249971 is a wasteful number, since it uses less digits than its factorization.

16249971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34661.

The product of its digits is 27216, while the sum is 39.

The square root of 16249971 is about 4031.1252771404. The cubic root of 16249971 is about 253.2897002800.

The spelling of 16249971 in words is "sixteen million, two hundred forty-nine thousand, nine hundred seventy-one".