215152639 has 8 divisors (see below), whose sum is σ = 232085840. Its totient is φ = 198274176.

The previous prime is 215152589. The next prime is 215152667. The reversal of 215152639 is 936251512.

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 215152639 - 2¹¹ = 215150591 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 (215152039) 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, 5322 + ... + 21415.

It is an arithmetic number, because the mean of its divisors is an integer number (29010730).

Almost surely, 2^215152639 is an apocalyptic number.

215152639 is a deficient number, since it is larger than the sum of its proper divisors (16933201).

215152639 is a wasteful number, since it uses less digits than its factorization.

215152639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27369.

The product of its digits is 16200, while the sum is 34.

The square root of 215152639 is about 14668.0823218306. The cubic root of 215152639 is about 599.2143782613.

The spelling of 215152639 in words is "two hundred fifteen million, one hundred fifty-two thousand, six hundred thirty-nine".