212394528 has 96 divisors (see below), whose sum is σ = 622339200. Its totient is φ = 70472448.

The previous prime is 212394527. The next prime is 212394557. The reversal of 212394528 is 825493212.

It is a happy number.

212394528 is a `hidden beast` number, since 2 + 123 + 9 + 4 + 528 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-4 number, since 4×212394528⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 212394492 and 212394501.

It is not an unprimeable number, because it can be changed into a prime (212394527) 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, 252733 + ... + 253571.

It is an arithmetic number, because the mean of its divisors is an integer number (6482700).

Almost surely, 2^212394528 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 212394528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311169600).

212394528 is an abundant number, since it is smaller than the sum of its proper divisors (409944672).

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

212394528 is a wasteful number, since it uses less digits than its factorization.

212394528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1137 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 212394528 is about 14573.7616283511. The cubic root of 212394528 is about 596.6428509510.

The spelling of 212394528 in words is "two hundred twelve million, three hundred ninety-four thousand, five hundred twenty-eight".