Search a number
-
+
281420996 = 22711099091
BaseRepresentation
bin10000110001100…
…010010011000100
3201121112200000212
4100301202103010
51034020432441
643531454552
76655016243
oct2061422304
9647480025
10281420996
1113494483a
127a2b7458
13463c43cc
142953895a
1519a8deeb
hex10c624c4

281420996 has 24 divisors (see below), whose sum is σ = 504060480. Its totient is φ = 137440800.

The previous prime is 281420987. The next prime is 281421011. The reversal of 281420996 is 699024182.

281420996 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 26411 + ... + 35501.

It is an arithmetic number, because the mean of its divisors is an integer number (21002520).

Almost surely, 2281420996 is an apocalyptic number.

It is an amenable number.

281420996 is a deficient number, since it is larger than the sum of its proper divisors (222639484).

281420996 is a wasteful number, since it uses less digits than its factorization.

281420996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9275 (or 9273 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 281420996 is about 16775.6071723202. The cubic root of 281420996 is about 655.3181027762.

The spelling of 281420996 in words is "two hundred eighty-one million, four hundred twenty thousand, nine hundred ninety-six".

Divisors: 1 2 4 71 109 142 218 284 436 7739 9091 15478 18182 30956 36364 645461 990919 1290922 1981838 2581844 3963676 70355249 140710498 281420996