285154128 has 240 divisors, whose sum is σ = 1003656000. Its totient is φ = 77075712.

The previous prime is 285154127. The next prime is 285154157. The reversal of 285154128 is 821451582.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 285154092 and 285154101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285154127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 401838 + ... + 402546.

It is an arithmetic number, because the mean of its divisors is an integer number (4181900).

Almost surely, 2^285154128 is an apocalyptic number.

285154128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285154128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501828000).

285154128 is an abundant number, since it is smaller than the sum of its proper divisors (718501872).

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

285154128 is a wasteful number, since it uses less digits than its factorization.

285154128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759 (or 740 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 285154128 is about 16886.5072765211. The cubic root of 285154128 is about 658.2030458332.

The spelling of 285154128 in words is "two hundred eighty-five million, one hundred fifty-four thousand, one hundred twenty-eight".