16248749 has 4 divisors (see below), whose sum is σ = 17725920. Its totient is φ = 14771580.

The previous prime is 16248737. The next prime is 16248763. The reversal of 16248749 is 94784261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16248749 - 2⁴ = 16248733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16248949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738569 + ... + 738590.

It is an arithmetic number, because the mean of its divisors is an integer number (4431480).

Almost surely, 2^16248749 is an apocalyptic number.

It is an amenable number.

16248749 is a deficient number, since it is larger than the sum of its proper divisors (1477171).

16248749 is a wasteful number, since it uses less digits than its factorization.

16248749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477170.

The product of its digits is 96768, while the sum is 41.

The square root of 16248749 is about 4030.9737037098. The cubic root of 16248749 is about 253.2833509810.

The spelling of 16248749 in words is "sixteen million, two hundred forty-eight thousand, seven hundred forty-nine".