Search a number
-
+
200401580 = 22510020079
BaseRepresentation
bin10111111000111…
…10001010101100
3111222002110021202
423330132022230
5402300322310
631515145032
74652246111
oct1374361254
9458073252
10200401580
11a3137745
1257145178
1332698022
141c888908
15128d83a5
hexbf1e2ac

200401580 has 12 divisors (see below), whose sum is σ = 420843360. Its totient is φ = 80160624.

The previous prime is 200401549. The next prime is 200401589. The reversal of 200401580 is 85104002.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10020079 = 200401580 / (2 + 0 + 0 + 4 + 0 + 1 + 5 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (200401589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5010020 + ... + 5010059.

It is an arithmetic number, because the mean of its divisors is an integer number (35070280).

Almost surely, 2200401580 is an apocalyptic number.

200401580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200401580 is an abundant number, since it is smaller than the sum of its proper divisors (220441780).

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

200401580 is a wasteful number, since it uses less digits than its factorization.

200401580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020088 (or 10020086 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 200401580 is about 14156.3265008970. The cubic root of 200401580 is about 585.1946949788.

Adding to 200401580 its reverse (85104002), we get a palindrome (285505582).

The spelling of 200401580 in words is "two hundred million, four hundred one thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 10020079 20040158 40080316 50100395 100200790 200401580