213975396 has 144 divisors (see below), whose sum is σ = 601945344. Its totient is φ = 63802368.

The previous prime is 213975383. The next prime is 213975407. The reversal of 213975396 is 693579312.

213975396 is a `hidden beast` number, since 21 + 3 + 97 + 539 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1236766 + ... + 1236938.

It is an arithmetic number, because the mean of its divisors is an integer number (4180176).

Almost surely, 2^213975396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213975396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300972672).

213975396 is an abundant number, since it is smaller than the sum of its proper divisors (387969948).

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

213975396 is a wasteful number, since it uses less digits than its factorization.

213975396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 285 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 213975396 is about 14627.8978667476. The cubic root of 213975396 is about 598.1194788915.

The spelling of 213975396 in words is "two hundred thirteen million, nine hundred seventy-five thousand, three hundred ninety-six".