213752506 has 8 divisors (see below), whose sum is σ = 349776864. Its totient is φ = 97160220.

The previous prime is 213752503. The next prime is 213752519. The reversal of 213752506 is 605257312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (213752503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857990 + ... + 4858033.

It is an arithmetic number, because the mean of its divisors is an integer number (43722108).

Almost surely, 2^213752506 is an apocalyptic number.

213752506 is a deficient number, since it is larger than the sum of its proper divisors (136024358).

213752506 is a wasteful number, since it uses less digits than its factorization.

213752506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9716036.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 213752506 is about 14620.2772203539. The cubic root of 213752506 is about 597.9117273313.

The spelling of 213752506 in words is "two hundred thirteen million, seven hundred fifty-two thousand, five hundred six".