216038741 has 4 divisors (see below), whose sum is σ = 216111084. Its totient is φ = 215966400.

The previous prime is 216038731. The next prime is 216038749. The reversal of 216038741 is 147830612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27772900 + 188265841 = 5270^2 + 13721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216038741 is a prime.

It is a super-2 number, since 2×216038741² = 93345475225730162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216038698 and 216038707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216038749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31490 + ... + 37731.

It is an arithmetic number, because the mean of its divisors is an integer number (54027771).

Almost surely, 2^216038741 is an apocalyptic number.

It is an amenable number.

216038741 is a deficient number, since it is larger than the sum of its proper divisors (72343).

216038741 is an equidigital number, since it uses as much as digits as its factorization.

216038741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72342.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 216038741 is about 14698.2563931917. The cubic root of 216038741 is about 600.0358691519.

The spelling of 216038741 in words is "two hundred sixteen million, thirty-eight thousand, seven hundred forty-one".