213238454 has 48 divisors (see below), whose sum is σ = 382947264. Its totient is φ = 88264800.

The previous prime is 213238439. The next prime is 213238457. The reversal of 213238454 is 454832312.

It is a self number, because there is not a number n which added to its sum of digits gives 213238454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213238457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 308249 + ... + 308939.

It is an arithmetic number, because the mean of its divisors is an integer number (7978068).

Almost surely, 2^213238454 is an apocalyptic number.

213238454 is a deficient number, since it is larger than the sum of its proper divisors (169708810).

213238454 is a wasteful number, since it uses less digits than its factorization.

213238454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 800 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 213238454 is about 14602.6865336485. The cubic root of 213238454 is about 597.4320379275.

The spelling of 213238454 in words is "two hundred thirteen million, two hundred thirty-eight thousand, four hundred fifty-four".