212835540 has 24 divisors (see below), whose sum is σ = 595939680. Its totient is φ = 56756128.

The previous prime is 212835523. The next prime is 212835589. The reversal of 212835540 is 45538212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 212835498 and 212835507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1773570 + ... + 1773689.

It is an arithmetic number, because the mean of its divisors is an integer number (24830820).

Almost surely, 2^212835540 is an apocalyptic number.

212835540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212835540 is an abundant number, since it is smaller than the sum of its proper divisors (383104140).

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

212835540 is a wasteful number, since it uses less digits than its factorization.

212835540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547271 (or 3547269 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 212835540 is about 14588.8841245655. The cubic root of 212835540 is about 597.0555181262.

The spelling of 212835540 in words is "two hundred twelve million, eight hundred thirty-five thousand, five hundred forty".