212013432 has 96 divisors (see below), whose sum is σ = 604422000. Its totient is φ = 67038720.

The previous prime is 212013421. The next prime is 212013469. The reversal of 212013432 is 234310212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122332 + ... + 124052.

Almost surely, 2^212013432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212013432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302211000).

212013432 is an abundant number, since it is smaller than the sum of its proper divisors (392408568).

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

212013432 is a wasteful number, since it uses less digits than its factorization.

212013432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212013432 is about 14560.6810280289. The cubic root of 212013432 is about 596.2857884983.

Adding to 212013432 its reverse (234310212), we get a palindrome (446323644).

The spelling of 212013432 in words is "two hundred twelve million, thirteen thousand, four hundred thirty-two".