16091396 has 6 divisors (see below), whose sum is σ = 28159950. Its totient is φ = 8045696.

The previous prime is 16091389. The next prime is 16091399. The reversal of 16091396 is 69319061.

It can be written as a sum of positive squares in only one way, i.e., 13322500 + 2768896 = 3650^2 + 1664^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16091399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011421 + ... + 2011428.

It is an arithmetic number, because the mean of its divisors is an integer number (4693325).

Almost surely, 2^16091396 is an apocalyptic number.

It is an amenable number.

16091396 is a deficient number, since it is larger than the sum of its proper divisors (12068554).

16091396 is a wasteful number, since it uses less digits than its factorization.

16091396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022853 (or 4022851 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 16091396 is about 4011.4082315317. The cubic root of 16091396 is about 252.4630982245.

The spelling of 16091396 in words is "sixteen million, ninety-one thousand, three hundred ninety-six".