212533400 has 48 divisors (see below), whose sum is σ = 495187800. Its totient is φ = 84833280.

The previous prime is 212533397. The next prime is 212533417. The reversal of 212533400 is 4335212.

It is a happy number.

212533400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212533400² = 90340892231120000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 133811 + ... + 135389.

Almost surely, 2^212533400 is an apocalyptic number.

212533400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212533400 is an abundant number, since it is smaller than the sum of its proper divisors (282654400).

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

212533400 is a wasteful number, since it uses less digits than its factorization.

212533400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268 (or 2259 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 212533400 is about 14578.5253026498. The cubic root of 212533400 is about 596.7728589051.

Adding to 212533400 its reverse (4335212), we get a palindrome (216868612).

The spelling of 212533400 in words is "two hundred twelve million, five hundred thirty-three thousand, four hundred".