873407556 has 144 divisors (see below), whose sum is σ = 2653956480. Its totient is φ = 247665600.

The previous prime is 873407537. The next prime is 873407567. The reversal of 873407556 is 655704378.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 798546 + ... + 799638.

Almost surely, 2^873407556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873407556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326978240).

873407556 is an abundant number, since it is smaller than the sum of its proper divisors (1780548924).

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

873407556 is a wasteful number, since it uses less digits than its factorization.

873407556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271 (or 1256 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 873407556 is about 29553.4694409980. The cubic root of 873407556 is about 955.8850036453.

The spelling of 873407556 in words is "eight hundred seventy-three million, four hundred seven thousand, five hundred fifty-six".