16543412 has 6 divisors (see below), whose sum is σ = 28950978. Its totient is φ = 8271704.

The previous prime is 16543411. The next prime is 16543441. The reversal of 16543412 is 21434561.

It can be written as a sum of positive squares in only one way, i.e., 13734436 + 2808976 = 3706^2 + 1676^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16543411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2067923 + ... + 2067930.

It is an arithmetic number, because the mean of its divisors is an integer number (4825163).

Almost surely, 2^16543412 is an apocalyptic number.

It is an amenable number.

16543412 is a deficient number, since it is larger than the sum of its proper divisors (12407566).

16543412 is a wasteful number, since it uses less digits than its factorization.

16543412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135857 (or 4135855 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 16543412 is about 4067.3593399158. The cubic root of 16543412 is about 254.8052440909.

Adding to 16543412 its reverse (21434561), we get a palindrome (37977973).

The spelling of 16543412 in words is "sixteen million, five hundred forty-three thousand, four hundred twelve".