Search a number
-
+
28980796 = 2213243997
BaseRepresentation
bin110111010001…
…1011000111100
32000112101011211
41232203120330
524404341141
62513054204
7501222055
oct156433074
960471154
1028980796
11153a4779
129857364
136009100
143bc572c
152826d81
hex1ba363c

28980796 has 36 divisors (see below), whose sum is σ = 56251272. Its totient is φ = 13051584.

The previous prime is 28980769. The next prime is 28980799. The reversal of 28980796 is 69708982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28980799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28570 + ... + 29566.

Almost surely, 228980796 is an apocalyptic number.

28980796 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28980796 is a deficient number, since it is larger than the sum of its proper divisors (27270476).

28980796 is a wasteful number, since it uses less digits than its factorization.

28980796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1055 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 28980796 is about 5383.3814652131. The cubic root of 28980796 is about 307.1638506138.

The spelling of 28980796 in words is "twenty-eight million, nine hundred eighty thousand, seven hundred ninety-six".

Divisors: 1 2 4 13 26 43 52 86 169 172 338 559 676 997 1118 1994 2236 3988 7267 12961 14534 25922 29068 42871 51844 85742 168493 171484 336986 557323 673972 1114646 2229292 7245199 14490398 28980796