215872033 has 8 divisors (see below), whose sum is σ = 233385768. Its totient is φ = 198488064.

The previous prime is 215871989. The next prime is 215872039. The reversal of 215872033 is 330278512.

It can be written as a sum of positive squares in 4 ways, for example, as 35856144 + 180015889 = 5988^2 + 13417^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 215872033 - 2¹⁷ = 215740961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215871986 and 215872004.

It is not an unprimeable number, because it can be changed into a prime (215872039) 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, 28966 + ... + 35647.

It is an arithmetic number, because the mean of its divisors is an integer number (29173221).

Almost surely, 2^215872033 is an apocalyptic number.

It is an amenable number.

215872033 is a deficient number, since it is larger than the sum of its proper divisors (17513735).

215872033 is a wasteful number, since it uses less digits than its factorization.

215872033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64883.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 215872033 is about 14692.5842859587. The cubic root of 215872033 is about 599.8814886303.

The spelling of 215872033 in words is "two hundred fifteen million, eight hundred seventy-two thousand, thirty-three".