213838635 has 16 divisors (see below), whose sum is σ = 360149760. Its totient is φ = 108044640.

The previous prime is 213838633. The next prime is 213838643. The reversal of 213838635 is 536838312.

It is not a de Polignac number, because 213838635 - 2¹ = 213838633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213838593 and 213838602.

It is not an unprimeable number, because it can be changed into a prime (213838633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374871 + ... + 375440.

It is an arithmetic number, because the mean of its divisors is an integer number (22509360).

Almost surely, 2^213838635 is an apocalyptic number.

213838635 is a deficient number, since it is larger than the sum of its proper divisors (146311125).

213838635 is a wasteful number, since it uses less digits than its factorization.

213838635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750338.

The product of its digits is 103680, while the sum is 39.

The square root of 213838635 is about 14623.2224560799. Note that the first 3 decimals coincide. The cubic root of 213838635 is about 597.9920236592.

The spelling of 213838635 in words is "two hundred thirteen million, eight hundred thirty-eight thousand, six hundred thirty-five".