214942978 has 8 divisors (see below), whose sum is σ = 323669772. Its totient is φ = 107053056.

The previous prime is 214942969. The next prime is 214943009. The reversal of 214942978 is 879249412.

It can be written as a sum of positive squares in 2 ways, for example, as 188595289 + 26347689 = 13733^2 + 5133^2 .

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

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, 208575 + ... + 209602.

Almost surely, 2^214942978 is an apocalyptic number.

214942978 is a deficient number, since it is larger than the sum of its proper divisors (108726794).

214942978 is a wasteful number, since it uses less digits than its factorization.

214942978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418436.

The product of its digits is 290304, while the sum is 46.

The square root of 214942978 is about 14660.9337356118. The cubic root of 214942978 is about 599.0196750700.

The spelling of 214942978 in words is "two hundred fourteen million, nine hundred forty-two thousand, nine hundred seventy-eight".