212690490 has 16 divisors (see below), whose sum is σ = 510457248. Its totient is φ = 56717456.

The previous prime is 212690483. The next prime is 212690531. The reversal of 212690490 is 94096212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544812 + ... + 3544871.

It is an arithmetic number, because the mean of its divisors is an integer number (31903578).

Almost surely, 2^212690490 is an apocalyptic number.

212690490 is an abundant number, since it is smaller than the sum of its proper divisors (297766758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212690490 is a wasteful number, since it uses less digits than its factorization.

212690490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089693.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 212690490 is about 14583.9120266134. The cubic root of 212690490 is about 596.9198537786.

The spelling of 212690490 in words is "two hundred twelve million, six hundred ninety thousand, four hundred ninety".