Search a number
-
+
71015048 = 23133122027
BaseRepresentation
bin1000011101110…
…01101010001000
311221121221022222
410032321222020
5121134440143
611014033212
71521421646
oct416715210
9157557288
1071015048
11370a4725
121b948808
1311935850
149608196
15637b768
hex43b9a88

71015048 has 32 divisors (see below), whose sum is σ = 148028160. Its totient is φ = 31717440.

The previous prime is 71015047. The next prime is 71015051. The reversal of 71015048 is 84051017.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (71015047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7790 + ... + 14237.

It is an arithmetic number, because the mean of its divisors is an integer number (4625880).

Almost surely, 271015048 is an apocalyptic number.

It is an amenable number.

71015048 is an abundant number, since it is smaller than the sum of its proper divisors (77013112).

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

71015048 is a wasteful number, since it uses less digits than its factorization.

71015048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22077 (or 22073 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 71015048 is about 8427.0426603880. The cubic root of 71015048 is about 414.1110268784. Note that the first 3 decimals are identical.

The spelling of 71015048 in words is "seventy-one million, fifteen thousand, forty-eight".

Divisors: 1 2 4 8 13 26 31 52 62 104 124 248 403 806 1612 3224 22027 44054 88108 176216 286351 572702 682837 1145404 1365674 2290808 2731348 5462696 8876881 17753762 35507524 71015048