Search a number
-
+
7898049220 = 2251793795821
BaseRepresentation
bin1110101101100001…
…01010101011000100
3202101102120110201111
413112300222223010
5112133400033340
63343414334404
7366502211365
oct72660525304
922342513644
107898049220
113393274306
12164505a404
1398b398709
1454cd29b6c
153135acaea
hex1d6c2aac4

7898049220 has 48 divisors (see below), whose sum is σ = 16725441600. Its totient is φ = 3132743040.

The previous prime is 7898049217. The next prime is 7898049221. The reversal of 7898049220 is 229408987.

It is not an unprimeable number, because it can be changed into a prime (7898049221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353910 + ... + 1359730.

It is an arithmetic number, because the mean of its divisors is an integer number (348446700).

Almost surely, 27898049220 is an apocalyptic number.

It is an amenable number.

7898049220 is an abundant number, since it is smaller than the sum of its proper divisors (8827392380).

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

7898049220 is a wasteful number, since it uses less digits than its factorization.

7898049220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388 (or 6386 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 7898049220 is about 88870.9695007318. The cubic root of 7898049220 is about 1991.4677538159.

The spelling of 7898049220 in words is "seven billion, eight hundred ninety-eight million, forty-nine thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 179 358 379 716 758 895 1516 1790 1895 3580 3790 5821 7580 11642 23284 29105 58210 67841 116420 135682 271364 339205 678410 1041959 1356820 2083918 2206159 4167836 4412318 5209795 8824636 10419590 11030795 20839180 22061590 44123180 394902461 789804922 1579609844 1974512305 3949024610 7898049220