16748391 has 16 divisors (see below), whose sum is σ = 24433920. Its totient is φ = 10120320.

The previous prime is 16748359. The next prime is 16748411. The reversal of 16748391 is 19384761.

It is not a de Polignac number, because 16748391 - 2⁵ = 16748359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16748491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16095 + ... + 17103.

It is an arithmetic number, because the mean of its divisors is an integer number (1527120).

Almost surely, 2^16748391 is an apocalyptic number.

16748391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16748391 is a deficient number, since it is larger than the sum of its proper divisors (7685529).

16748391 is a wasteful number, since it uses less digits than its factorization.

16748391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526.

The product of its digits is 36288, while the sum is 39.

The square root of 16748391 is about 4092.4798105794. The cubic root of 16748391 is about 255.8533044236.

The spelling of 16748391 in words is "sixteen million, seven hundred forty-eight thousand, three hundred ninety-one".