212523460 has 48 divisors (see below), whose sum is σ = 474840576. Its totient is φ = 79621632.

The previous prime is 212523439. The next prime is 212523463. The reversal of 212523460 is 64325212.

212523460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212523463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74419 + ... + 77221.

It is an arithmetic number, because the mean of its divisors is an integer number (9892512).

Almost surely, 2^212523460 is an apocalyptic number.

212523460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212523460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237420288).

212523460 is an abundant number, since it is smaller than the sum of its proper divisors (262317116).

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

212523460 is a wasteful number, since it uses less digits than its factorization.

212523460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052 (or 3050 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 212523460 is about 14578.1843862670. The cubic root of 212523460 is about 596.7635552463.

Adding to 212523460 its reverse (64325212), we get a palindrome (276848672).

The spelling of 212523460 in words is "two hundred twelve million, five hundred twenty-three thousand, four hundred sixty".