213894532 has 6 divisors (see below), whose sum is σ = 374315438. Its totient is φ = 106947264.

The previous prime is 213894491. The next prime is 213894547. The reversal of 213894532 is 235498312.

It can be written as a sum of positive squares in only one way, i.e., 178062336 + 35832196 = 13344^2 + 5986^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213894491 and 213894500.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26736813 + ... + 26736820.

Almost surely, 2^213894532 is an apocalyptic number.

It is an amenable number.

213894532 is a deficient number, since it is larger than the sum of its proper divisors (160420906).

213894532 is a wasteful number, since it uses less digits than its factorization.

213894532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53473637 (or 53473635 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 213894532 is about 14625.1335720396. The cubic root of 213894532 is about 598.0441237674.

It can be divided in two parts, 21389 and 4532, that added together give a square (25921 = 161²).

The spelling of 213894532 in words is "two hundred thirteen million, eight hundred ninety-four thousand, five hundred thirty-two".