213881450 has 24 divisors (see below), whose sum is σ = 398465568. Its totient is φ = 85413680.

The previous prime is 213881429. The next prime is 213881453. The reversal of 213881450 is 54188312.

It is not an unprimeable number, because it can be changed into a prime (213881453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31019 + ... + 37281.

It is an arithmetic number, because the mean of its divisors is an integer number (16602732).

Almost surely, 2^213881450 is an apocalyptic number.

213881450 is a deficient number, since it is larger than the sum of its proper divisors (184584118).

213881450 is a wasteful number, since it uses less digits than its factorization.

213881450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958 (or 6953 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 213881450 is about 14624.6863214224. The cubic root of 213881450 is about 598.0319311965.

The spelling of 213881450 in words is "two hundred thirteen million, eight hundred eighty-one thousand, four hundred fifty".