213078 has 16 divisors (see below), whose sum is σ = 451440. Its totient is φ = 66816.

The previous prime is 213067. The next prime is 213079. The reversal of 213078 is 870312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (28215).

2²¹³⁰⁷⁸ is an apocalyptic number.

213078 is an abundant number, since it is smaller than the sum of its proper divisors (238362).

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

213078 is a wasteful number, since it uses less digits than its factorization.

213078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 213078 is about 461.6037261548. The cubic root of 213078 is about 59.7282151869.

The spelling of 213078 in words is "two hundred thirteen thousand, seventy-eight".