212499530 has 32 divisors (see below), whose sum is σ = 412905600. Its totient is φ = 78498112.

The previous prime is 212499517. The next prime is 212499557. The reversal of 212499530 is 35994212.

212499530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9260 + ... + 22599.

It is an arithmetic number, because the mean of its divisors is an integer number (12903300).

Almost surely, 2^212499530 is an apocalyptic number.

212499530 is a deficient number, since it is larger than the sum of its proper divisors (200406070).

212499530 is a wasteful number, since it uses less digits than its factorization.

212499530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31918.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 212499530 is about 14577.3636162373. The cubic root of 212499530 is about 596.7411560127.

The spelling of 212499530 in words is "two hundred twelve million, four hundred ninety-nine thousand, five hundred thirty".