212945078 has 8 divisors (see below), whose sum is σ = 319667040. Its totient is φ = 106389400.

The previous prime is 212945069. The next prime is 212945093. The reversal of 212945078 is 870549212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 38318 + ... + 43521.

It is an arithmetic number, because the mean of its divisors is an integer number (39958380).

Almost surely, 2^212945078 is an apocalyptic number.

212945078 is a deficient number, since it is larger than the sum of its proper divisors (106721962).

212945078 is a wasteful number, since it uses less digits than its factorization.

212945078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83142.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 212945078 is about 14592.6378013024. The cubic root of 212945078 is about 597.1579274809.

The spelling of 212945078 in words is "two hundred twelve million, nine hundred forty-five thousand, seventy-eight".