872193438 has 24 divisors (see below), whose sum is σ = 1906480368. Its totient is φ = 288157632.

The previous prime is 872193397. The next prime is 872193527. The reversal of 872193438 is 834391278.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 872193393 and 872193402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212370 + ... + 216437.

It is an arithmetic number, because the mean of its divisors is an integer number (79436682).

Almost surely, 2^872193438 is an apocalyptic number.

872193438 is an abundant number, since it is smaller than the sum of its proper divisors (1034286930).

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

872193438 is a wasteful number, since it uses less digits than its factorization.

872193438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428928 (or 428925 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 872193438 is about 29532.9212574713. The cubic root of 872193438 is about 955.4418751358.

The spelling of 872193438 in words is "eight hundred seventy-two million, one hundred ninety-three thousand, four hundred thirty-eight".