212956478 has 8 divisors (see below), whose sum is σ = 365068272. Its totient is φ = 91267056.

The previous prime is 212956459. The next prime is 212956481. The reversal of 212956478 is 874659212.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7605575 + ... + 7605602.

It is an arithmetic number, because the mean of its divisors is an integer number (45633534).

Almost surely, 2^212956478 is an apocalyptic number.

212956478 is a deficient number, since it is larger than the sum of its proper divisors (152111794).

212956478 is a wasteful number, since it uses less digits than its factorization.

212956478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15211186.

The product of its digits is 241920, while the sum is 44.

The square root of 212956478 is about 14593.0284040017. The cubic root of 212956478 is about 597.1685835601.

The spelling of 212956478 in words is "two hundred twelve million, nine hundred fifty-six thousand, four hundred seventy-eight".