215152208 has 20 divisors (see below), whose sum is σ = 421157940. Its totient is φ = 106466304.

The previous prime is 215152193. The next prime is 215152211. The reversal of 215152208 is 802251512.

215152208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 111682624 + 103469584 = 10568^2 + 10172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67763 + ... + 70866.

It is an arithmetic number, because the mean of its divisors is an integer number (21057897).

Almost surely, 2^215152208 is an apocalyptic number.

It is an amenable number.

215152208 is a deficient number, since it is larger than the sum of its proper divisors (206005732).

215152208 is a wasteful number, since it uses less digits than its factorization.

215152208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138734 (or 138728 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 215152208 is about 14668.0676300595. The cubic root of 215152208 is about 599.2139781398.

The spelling of 215152208 in words is "two hundred fifteen million, one hundred fifty-two thousand, two hundred eight".