273216749 has 8 divisors (see below), whose sum is σ = 299785752. Its totient is φ = 247440960.

The previous prime is 273216737. The next prime is 273216767. The reversal of 273216749 is 947612372.

It can be written as a sum of positive squares in 4 ways, for example, as 101868649 + 171348100 = 10093^2 + 13090^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-273216749 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 (273216649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197582 + ... + 198959.

It is an arithmetic number, because the mean of its divisors is an integer number (37473219).

Almost surely, 2^273216749 is an apocalyptic number.

It is an amenable number.

273216749 is a deficient number, since it is larger than the sum of its proper divisors (26569003).

273216749 is a wasteful number, since it uses less digits than its factorization.

273216749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396607.

The product of its digits is 127008, while the sum is 41.

The square root of 273216749 is about 16529.2694635909. The cubic root of 273216749 is about 648.8870493042.

The spelling of 273216749 in words is "two hundred seventy-three million, two hundred sixteen thousand, seven hundred forty-nine".