215073078 has 32 divisors (see below), whose sum is σ = 469884672. Its totient is φ = 65085600.

The previous prime is 215073073. The next prime is 215073083. The reversal of 215073078 is 870370512.

It is an interprime number because it is at equal distance from previous prime (215073073) and next prime (215073083).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215073073) 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 in 15 ways as a sum of consecutive naturals, for example, 60375 + ... + 63837.

It is an arithmetic number, because the mean of its divisors is an integer number (14683896).

Almost surely, 2^215073078 is an apocalyptic number.

215073078 is an abundant number, since it is smaller than the sum of its proper divisors (254811594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215073078 is a wasteful number, since it uses less digits than its factorization.

215073078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 215073078 is about 14665.3700260171. The cubic root of 215073078 is about 599.1405082667.

The spelling of 215073078 in words is "two hundred fifteen million, seventy-three thousand, seventy-eight".