Search a number
-
+
8421030108 = 2233523149087
BaseRepresentation
bin1111101011110111…
…01011100011011100
3210201212122122122000
413311323223203130
5114221240430413
63511335522300
7415452401121
oct76573534334
923655578560
108421030108
1136314a7617
121770229390
13a4283896a
1459c584748
15344465073
hex1f5eeb8dc

8421030108 has 48 divisors (see below), whose sum is σ = 21874191360. Its totient is φ = 2801624112.

The previous prime is 8421030097. The next prime is 8421030127. The reversal of 8421030108 is 8010301248.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18060 + ... + 131027.

It is an arithmetic number, because the mean of its divisors is an integer number (455712320).

Almost surely, 28421030108 is an apocalyptic number.

It is an amenable number.

8421030108 is an abundant number, since it is smaller than the sum of its proper divisors (13453161252).

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

8421030108 is a wasteful number, since it uses less digits than its factorization.

8421030108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149623 (or 149615 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 8421030108 is about 91766.1708256370. The cubic root of 8421030108 is about 2034.4877225145.

The spelling of 8421030108 in words is "eight billion, four hundred twenty-one million, thirty thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 523 1046 1569 2092 3138 4707 6276 9414 14121 18828 28242 56484 149087 298174 447261 596348 894522 1341783 1789044 2683566 4025349 5367132 8050698 16101396 77972501 155945002 233917503 311890004 467835006 701752509 935670012 1403505018 2105257527 2807010036 4210515054 8421030108