215894002 has 4 divisors (see below), whose sum is σ = 323841006. Its totient is φ = 107947000.

The previous prime is 215893991. The next prime is 215894027. The reversal of 215894002 is 200498512.

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

It can be written as a sum of positive squares in only one way, i.e., 214358881 + 1535121 = 14641^2 + 1239^2 .

It is a super-2 number, since 2×215894002² = 93220440199152008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53973499 + ... + 53973502.

Almost surely, 2^215894002 is an apocalyptic number.

215894002 is a deficient number, since it is larger than the sum of its proper divisors (107947004).

215894002 is a wasteful number, since it uses less digits than its factorization.

215894002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107947003.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 215894002 is about 14693.3318889896. The cubic root of 215894002 is about 599.9018376448.

The spelling of 215894002 in words is "two hundred fifteen million, eight hundred ninety-four thousand, two".