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285401037 = 3157605947
BaseRepresentation
bin10001000000101…
…101111111001101
3201220000212121210
4101000231333031
51041030313122
644153045033
710033603665
oct2100557715
9656025553
10285401037
11137113029
127b6b6779
1347188b6c
1429c931a5
151a0c840c
hex1102dfcd

285401037 has 8 divisors (see below), whose sum is σ = 382959136. Its totient is φ = 189055152.

The previous prime is 285401029. The next prime is 285401047. The reversal of 285401037 is 730104582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 285401037 - 23 = 285401029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 285400995 and 285401013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285401047) 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, 302503 + ... + 303444.

It is an arithmetic number, because the mean of its divisors is an integer number (47869892).

Almost surely, 2285401037 is an apocalyptic number.

It is an amenable number.

285401037 is a deficient number, since it is larger than the sum of its proper divisors (97558099).

285401037 is a wasteful number, since it uses less digits than its factorization.

285401037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606107.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 285401037 is about 16893.8165315005. The cubic root of 285401037 is about 658.3929657817.

The spelling of 285401037 in words is "two hundred eighty-five million, four hundred one thousand, thirty-seven".

Divisors: 1 3 157 471 605947 1817841 95133679 285401037