Search a number
-
+
48879281 = 1123183157
BaseRepresentation
bin1011101001110…
…1011010110001
310101222022202202
42322131122301
5100003114111
64503352545
71132316123
oct272353261
9111868682
1048879281
1125655800
1214452755
13a185269
1466c5213
154457b3b
hex2e9d6b1

48879281 has 24 divisors (see below), whose sum is σ = 56485632. Its totient is φ = 42213600.

The previous prime is 48879277. The next prime is 48879287. The reversal of 48879281 is 18297884.

It is not a de Polignac number, because 48879281 - 22 = 48879277 is a prime.

It is a super-2 number, since 2×488792812 = 4778368222153922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48879287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311255 + ... + 311411.

It is an arithmetic number, because the mean of its divisors is an integer number (2353568).

Almost surely, 248879281 is an apocalyptic number.

It is an amenable number.

48879281 is a deficient number, since it is larger than the sum of its proper divisors (7606351).

48879281 is a wasteful number, since it uses less digits than its factorization.

48879281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 282 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 48879281 is about 6991.3718968454. The cubic root of 48879281 is about 365.6298152238.

The spelling of 48879281 in words is "forty-eight million, eight hundred seventy-nine thousand, two hundred eighty-one".

Divisors: 1 11 31 83 121 157 341 913 1727 2573 3751 4867 10043 13031 18997 28303 53537 143341 311333 403961 588907 1576751 4443571 48879281