213477738 has 16 divisors (see below), whose sum is σ = 452070720. Its totient is φ = 66973376.

The previous prime is 213477709. The next prime is 213477739. The reversal of 213477738 is 837774312.

It is a self number, because there is not a number n which added to its sum of digits gives 213477738.

It is not an unprimeable number, because it can be changed into a prime (213477739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046358 + ... + 1046561.

It is an arithmetic number, because the mean of its divisors is an integer number (28254420).

Almost surely, 2^213477738 is an apocalyptic number.

213477738 is an abundant number, since it is smaller than the sum of its proper divisors (238592982).

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

213477738 is a wasteful number, since it uses less digits than its factorization.

213477738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092941.

The product of its digits is 197568, while the sum is 42.

The square root of 213477738 is about 14610.8773863858. The cubic root of 213477738 is about 597.6554224157.

The spelling of 213477738 in words is "two hundred thirteen million, four hundred seventy-seven thousand, seven hundred thirty-eight".