213701652 has 60 divisors (see below), whose sum is σ = 560087220. Its totient is φ = 71051904.

The previous prime is 213701629. The next prime is 213701669. The reversal of 213701652 is 256107312.

It is a happy number.

213701652 is a `hidden beast` number, since 2 + 1 + 3 + 7 + 0 + 1 + 652 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 42458256 + 171243396 = 6516^2 + 13086^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 199374 + ... + 200442.

It is an arithmetic number, because the mean of its divisors is an integer number (9334787).

Almost surely, 2^213701652 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 213701652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280043610).

213701652 is an abundant number, since it is smaller than the sum of its proper divisors (346385568).

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

213701652 is a wasteful number, since it uses less digits than its factorization.

213701652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 213701652 is about 14618.5379569915. The cubic root of 213701652 is about 597.8643070457.

Adding to 213701652 its reverse (256107312), we get a palindrome (469808964).

The spelling of 213701652 in words is "two hundred thirteen million, seven hundred one thousand, six hundred fifty-two".