212430890 has 32 divisors (see below), whose sum is σ = 445253760. Its totient is φ = 71457984.

The previous prime is 212430851. The next prime is 212430917. The reversal of 212430890 is 98034212.

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, 24920 + ... + 32339.

It is an arithmetic number, because the mean of its divisors is an integer number (13914180).

Almost surely, 2^212430890 is an apocalyptic number.

212430890 is an abundant number, since it is smaller than the sum of its proper divisors (232822870).

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

212430890 is a wasteful number, since it uses less digits than its factorization.

212430890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57326.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 212430890 is about 14575.0090909063. The cubic root of 212430890 is about 596.6768974800.

The spelling of 212430890 in words is "two hundred twelve million, four hundred thirty thousand, eight hundred ninety".