213543730 has 32 divisors (see below), whose sum is σ = 403273728. Its totient is φ = 81259200.

The previous prime is 213543727. The next prime is 213543739. The reversal of 213543730 is 37345312.

It is not an unprimeable number, because it can be changed into a prime (213543739) 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, 41500 + ... + 46360.

It is an arithmetic number, because the mean of its divisors is an integer number (12602304).

Almost surely, 2^213543730 is an apocalyptic number.

213543730 is a deficient number, since it is larger than the sum of its proper divisors (189729998).

213543730 is a wasteful number, since it uses less digits than its factorization.

213543730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5082.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 213543730 is about 14613.1355293790. The cubic root of 213543730 is about 597.7170001297.

The spelling of 213543730 in words is "two hundred thirteen million, five hundred forty-three thousand, seven hundred thirty".