213473378 has 16 divisors (see below), whose sum is σ = 330981120. Its totient is φ = 103155600.

The previous prime is 213473333. The next prime is 213473399. The reversal of 213473378 is 873374312.

It is a super-2 number, since 2×213473378² = 91141766229461768, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56513 + ... + 60171.

It is an arithmetic number, because the mean of its divisors is an integer number (20686320).

Almost surely, 2^213473378 is an apocalyptic number.

213473378 is a deficient number, since it is larger than the sum of its proper divisors (117507742).

213473378 is a wasteful number, since it uses less digits than its factorization.

213473378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633.

The product of its digits is 84672, while the sum is 38.

The square root of 213473378 is about 14610.7281817163. The cubic root of 213473378 is about 597.6513536146.

The spelling of 213473378 in words is "two hundred thirteen million, four hundred seventy-three thousand, three hundred seventy-eight".