212730970 has 8 divisors (see below), whose sum is σ = 382915764. Its totient is φ = 85092384.

The previous prime is 212730961. The next prime is 212730971. The reversal of 212730970 is 79037212.

It can be written as a sum of positive squares in 2 ways, for example, as 212663889 + 67081 = 14583^2 + 259^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212730971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10636539 + ... + 10636558.

Almost surely, 2^212730970 is an apocalyptic number.

212730970 is a deficient number, since it is larger than the sum of its proper divisors (170184794).

212730970 is a wasteful number, since it uses less digits than its factorization.

212730970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21273104.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 212730970 is about 14585.2997912282. The cubic root of 212730970 is about 596.9577206698.

The spelling of 212730970 in words is "two hundred twelve million, seven hundred thirty thousand, nine hundred seventy".