213533274 has 8 divisors (see below), whose sum is σ = 427066560. Its totient is φ = 71177756.

The previous prime is 213533263. The next prime is 213533279. The reversal of 213533274 is 472335312.

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

213533274 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (213533279) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17794434 + ... + 17794445.

It is an arithmetic number, because the mean of its divisors is an integer number (53383320).

Almost surely, 2^213533274 is an apocalyptic number.

213533274 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213533274 is a wasteful number, since it uses less digits than its factorization.

213533274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35588884.

The product of its digits is 15120, while the sum is 30.

The square root of 213533274 is about 14612.7777646825. Note that the first 4 decimals coincide. The cubic root of 213533274 is about 597.7072443903.

Adding to 213533274 its reverse (472335312), we get a palindrome (685868586).

The spelling of 213533274 in words is "two hundred thirteen million, five hundred thirty-three thousand, two hundred seventy-four".