212520478 has 8 divisors (see below), whose sum is σ = 324183960. Its totient is φ = 104459160.

The previous prime is 212520467. The next prime is 212520481. The reversal of 212520478 is 874025212.

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, 900393 + ... + 900628.

It is an arithmetic number, because the mean of its divisors is an integer number (40522995).

Almost surely, 2^212520478 is an apocalyptic number.

212520478 is a deficient number, since it is larger than the sum of its proper divisors (111663482).

212520478 is a wasteful number, since it uses less digits than its factorization.

212520478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801082.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 212520478 is about 14578.0821097976. The cubic root of 212520478 is about 596.7607640921.

The spelling of 212520478 in words is "two hundred twelve million, five hundred twenty thousand, four hundred seventy-eight".