215096078 has 4 divisors (see below), whose sum is σ = 322644120. Its totient is φ = 107548038.

The previous prime is 215096071. The next prime is 215096099. The reversal of 215096078 is 870690512.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215096071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53774018 + ... + 53774021.

It is an arithmetic number, because the mean of its divisors is an integer number (80661030).

Almost surely, 2^215096078 is an apocalyptic number.

215096078 is a deficient number, since it is larger than the sum of its proper divisors (107548042).

215096078 is a wasteful number, since it uses less digits than its factorization.

215096078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107548041.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 215096078 is about 14666.1541652882. The cubic root of 215096078 is about 599.1618649464.

The spelling of 215096078 in words is "two hundred fifteen million, ninety-six thousand, seventy-eight".