16381436 has 6 divisors (see below), whose sum is σ = 28667520. Its totient is φ = 8190716.

The previous prime is 16381397. The next prime is 16381447. The reversal of 16381436 is 63418361.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2047676 + ... + 2047683.

It is an arithmetic number, because the mean of its divisors is an integer number (4777920).

Almost surely, 2^16381436 is an apocalyptic number.

It is an amenable number.

16381436 is a deficient number, since it is larger than the sum of its proper divisors (12286084).

16381436 is a wasteful number, since it uses less digits than its factorization.

16381436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095363 (or 4095361 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 16381436 is about 4047.3986707514. The cubic root of 16381436 is about 253.9709186123.

Adding to 16381436 its reverse (63418361), we get a palindrome (79799797).

The spelling of 16381436 in words is "sixteen million, three hundred eighty-one thousand, four hundred thirty-six".