285745731446 has 16 divisors (see below), whose sum is σ = 518664521376. Its totient is φ = 115258782336.

The previous prime is 285745731391. The next prime is 285745731449. The reversal of 285745731446 is 644137547582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 285745731391 and 285745731400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285745731449) 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, 600305921 + ... + 600306396.

It is an arithmetic number, because the mean of its divisors is an integer number (32416532586).

Almost surely, 2^285745731446 is an apocalyptic number.

285745731446 is a deficient number, since it is larger than the sum of its proper divisors (232918789930).

285745731446 is a wasteful number, since it uses less digits than its factorization.

285745731446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200612343.

The product of its digits is 22579200, while the sum is 56.

The spelling of 285745731446 in words is "two hundred eighty-five billion, seven hundred forty-five million, seven hundred thirty-one thousand, four hundred forty-six".