212033400 has 48 divisors (see below), whose sum is σ = 657305400. Its totient is φ = 56542080.

The previous prime is 212033383. The next prime is 212033461. The reversal of 212033400 is 4330212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212033400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176095 + ... + 177294.

Almost surely, 2^212033400 is an apocalyptic number.

212033400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212033400 is an abundant number, since it is smaller than the sum of its proper divisors (445272000).

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

212033400 is a wasteful number, since it uses less digits than its factorization.

212033400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353408 (or 353399 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 212033400 is about 14561.3666940985. The cubic root of 212033400 is about 596.3045078482.

Adding to 212033400 its reverse (4330212), we get a palindrome (216363612).

The spelling of 212033400 in words is "two hundred twelve million, thirty-three thousand, four hundred".