872561426 has 16 divisors (see below), whose sum is σ = 1462654368. Its totient is φ = 386944800.

The previous prime is 872561413. The next prime is 872561447. The reversal of 872561426 is 624165278.

It is a super-2 number, since 2×872561426² = 1522726884286306952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 7 ways as a sum of consecutive naturals, for example, 482780 + ... + 484583.

It is an arithmetic number, because the mean of its divisors is an integer number (91415898).

Almost surely, 2^872561426 is an apocalyptic number.

872561426 is a deficient number, since it is larger than the sum of its proper divisors (590092942).

872561426 is a wasteful number, since it uses less digits than its factorization.

872561426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967417.

The product of its digits is 161280, while the sum is 41.

The square root of 872561426 is about 29539.1507325448. The cubic root of 872561426 is about 955.5762267197.

The spelling of 872561426 in words is "eight hundred seventy-two million, five hundred sixty-one thousand, four hundred twenty-six".