213457378 has 8 divisors (see below), whose sum is σ = 320628672. Its totient is φ = 106581156.

The previous prime is 213457369. The next prime is 213457379. The reversal of 213457378 is 873754312.

It is a happy number.

213457378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 213457378.

It is not an unprimeable number, because it can be changed into a prime (213457379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71950 + ... + 74857.

It is an arithmetic number, because the mean of its divisors is an integer number (40078584).

Almost surely, 2^213457378 is an apocalyptic number.

213457378 is a deficient number, since it is larger than the sum of its proper divisors (107171294).

213457378 is a wasteful number, since it uses less digits than its factorization.

213457378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147536.

The product of its digits is 141120, while the sum is 40.

The square root of 213457378 is about 14610.1806285891. The cubic root of 213457378 is about 597.6364217596.

The spelling of 213457378 in words is "two hundred thirteen million, four hundred fifty-seven thousand, three hundred seventy-eight".