212339490 has 32 divisors (see below), whose sum is σ = 555944256. Its totient is φ = 51476160.

The previous prime is 212339489. The next prime is 212339507. The reversal of 212339490 is 94933212.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 321397 + ... + 322056.

It is an arithmetic number, because the mean of its divisors is an integer number (17373258).

Almost surely, 2^212339490 is an apocalyptic number.

212339490 is an abundant number, since it is smaller than the sum of its proper divisors (343604766).

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

212339490 is a wasteful number, since it uses less digits than its factorization.

212339490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643474.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 212339490 is about 14571.8732495174. The cubic root of 212339490 is about 596.5913102853.

The spelling of 212339490 in words is "two hundred twelve million, three hundred thirty-nine thousand, four hundred ninety".