213378236 has 12 divisors (see below), whose sum is σ = 373610328. Its totient is φ = 106632432.

The previous prime is 213378233. The next prime is 213378241. The reversal of 213378236 is 632873312.

It is a junction number, because it is equal to n+sod(n) for n = 213378196 and 213378205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213378233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5051 + ... + 21266.

It is an arithmetic number, because the mean of its divisors is an integer number (31134194).

Almost surely, 2^213378236 is an apocalyptic number.

It is an amenable number.

213378236 is a deficient number, since it is larger than the sum of its proper divisors (160232092).

213378236 is a wasteful number, since it uses less digits than its factorization.

213378236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28348 (or 28346 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 213378236 is about 14607.4719236424. The cubic root of 213378236 is about 597.5625522299.

The spelling of 213378236 in words is "two hundred thirteen million, three hundred seventy-eight thousand, two hundred thirty-six".