Search a number
-
+
28471276 = 2259120641
BaseRepresentation
bin110110010011…
…0111111101100
31222120111020201
41230212333230
524242040101
62454123244
7464000431
oct154467754
958514221
1028471276
1115086989
129650524
135b8b212
143ad1b88
152775e01
hex1b26fec

28471276 has 12 divisors (see below), whose sum is σ = 50669640. Its totient is φ = 13994240.

The previous prime is 28471271. The next prime is 28471279. The reversal of 28471276 is 67217482.

It is a super-2 number, since 2×284712762 = 1621227114136352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28471271) 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, 60085 + ... + 60556.

It is an arithmetic number, because the mean of its divisors is an integer number (4222470).

Almost surely, 228471276 is an apocalyptic number.

It is an amenable number.

28471276 is a deficient number, since it is larger than the sum of its proper divisors (22198364).

28471276 is a wasteful number, since it uses less digits than its factorization.

28471276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120704 (or 120702 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 28471276 is about 5335.8481987403. The cubic root of 28471276 is about 305.3530838827.

The spelling of 28471276 in words is "twenty-eight million, four hundred seventy-one thousand, two hundred seventy-six".

Divisors: 1 2 4 59 118 236 120641 241282 482564 7117819 14235638 28471276