212470628 has 6 divisors (see below), whose sum is σ = 371823606. Its totient is φ = 106235312.

The previous prime is 212470627. The next prime is 212470631. The reversal of 212470628 is 826074212.

It can be written as a sum of positive squares in only one way, i.e., 156550144 + 55920484 = 12512^2 + 7478^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212470594 and 212470603.

It is not an unprimeable number, because it can be changed into a prime (212470627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26558825 + ... + 26558832.

It is an arithmetic number, because the mean of its divisors is an integer number (61970601).

Almost surely, 2^212470628 is an apocalyptic number.

It is an amenable number.

212470628 is a deficient number, since it is larger than the sum of its proper divisors (159352978).

212470628 is a wasteful number, since it uses less digits than its factorization.

212470628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53117661 (or 53117659 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 212470628 is about 14576.3722510095. The cubic root of 212470628 is about 596.7141005883.

The spelling of 212470628 in words is "two hundred twelve million, four hundred seventy thousand, six hundred twenty-eight".