213561832 has 32 divisors (see below), whose sum is σ = 437464800. Its totient is φ = 96932800.

The previous prime is 213561811. The next prime is 213561839. The reversal of 213561832 is 238165312.

It is a junction number, because it is equal to n+sod(n) for n = 213561794 and 213561803.

It is not an unprimeable number, because it can be changed into a prime (213561839) 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, 81519 + ... + 84097.

It is an arithmetic number, because the mean of its divisors is an integer number (13670775).

Almost surely, 2^213561832 is an apocalyptic number.

213561832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213561832 is an abundant number, since it is smaller than the sum of its proper divisors (223902968).

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

213561832 is a wasteful number, since it uses less digits than its factorization.

213561832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3537 (or 3533 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 213561832 is about 14613.7548905133. The cubic root of 213561832 is about 597.7338890473.

The spelling of 213561832 in words is "two hundred thirteen million, five hundred sixty-one thousand, eight hundred thirty-two".