213529734 has 48 divisors (see below), whose sum is σ = 507995280. Its totient is φ = 64284480.

The previous prime is 213529727. The next prime is 213529759. The reversal of 213529734 is 437925312.

It is a super-2 number, since 2×213529734² = 91189894604221512, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 27652 + ... + 34520.

It is an arithmetic number, because the mean of its divisors is an integer number (10583235).

Almost surely, 2^213529734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213529734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253997640).

213529734 is an abundant number, since it is smaller than the sum of its proper divisors (294465546).

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

213529734 is a wasteful number, since it uses less digits than its factorization.

213529734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7045 (or 7042 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 213529734 is about 14612.6566373127. The cubic root of 213529734 is about 597.7039413994.

The spelling of 213529734 in words is "two hundred thirteen million, five hundred twenty-nine thousand, seven hundred thirty-four".