285132736 has 56 divisors (see below), whose sum is σ = 649589760. Its totient is φ = 121642752.

The previous prime is 285132713. The next prime is 285132769. The reversal of 285132736 is 637231582.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 285132695 and 285132704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105741 + ... + 108403.

Almost surely, 2^285132736 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 285132736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324794880).

285132736 is an abundant number, since it is smaller than the sum of its proper divisors (364457024).

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

285132736 is a wasteful number, since it uses less digits than its factorization.

285132736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921 (or 2911 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 285132736 is about 16885.8738595312. The cubic root of 285132736 is about 658.1865861595.

The spelling of 285132736 in words is "two hundred eighty-five million, one hundred thirty-two thousand, seven hundred thirty-six".