861353472 has 80 divisors (see below), whose sum is σ = 2622546432. Its totient is φ = 246097920.

The previous prime is 861353417. The next prime is 861353513. The reversal of 861353472 is 274353168.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 861353472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29304 + ... + 50807.

Almost surely, 2^861353472 is an apocalyptic number.

It is an amenable number.

861353472 is an abundant number, since it is smaller than the sum of its proper divisors (1761192960).

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

861353472 is an equidigital number, since it uses as much as digits as its factorization.

861353472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80139 (or 80123 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 861353472 is about 29348.8240309557. The cubic root of 861353472 is about 951.4671593925.

The spelling of 861353472 in words is "eight hundred sixty-one million, three hundred fifty-three thousand, four hundred seventy-two".