212911490 has 32 divisors (see below), whose sum is σ = 427813056. Its totient is φ = 75620160.

The previous prime is 212911487. The next prime is 212911507. The reversal of 212911490 is 94119212.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17777 + ... + 27236.

It is an arithmetic number, because the mean of its divisors is an integer number (13369158).

Almost surely, 2^212911490 is an apocalyptic number.

212911490 is an abundant number, since it is smaller than the sum of its proper divisors (214901566).

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

212911490 is a wasteful number, since it uses less digits than its factorization.

212911490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45074.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 212911490 is about 14591.4869016149. The cubic root of 212911490 is about 597.1265290951.

The spelling of 212911490 in words is "two hundred twelve million, nine hundred eleven thousand, four hundred ninety".