Search a number
-
+
158828680 = 2354918087
BaseRepresentation
bin10010111011110…
…00100010001000
3102001212022222201
421131320202020
5311130004210
623432125544
73636010243
oct1135704210
9361768881
10158828680
118172237a
12452368b4
1326ba058a
141714625a
15de2553a
hex9778888

158828680 has 32 divisors (see below), whose sum is σ = 358136640. Its totient is φ = 63394240.

The previous prime is 158828641. The next prime is 158828687. The reversal of 158828680 is 86828851.

It is a self number, because there is not a number n which added to its sum of digits gives 158828680.

It is not an unprimeable number, because it can be changed into a prime (158828687) 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, 15597 + ... + 23683.

It is an arithmetic number, because the mean of its divisors is an integer number (11191770).

Almost surely, 2158828680 is an apocalyptic number.

158828680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158828680 is an abundant number, since it is smaller than the sum of its proper divisors (199307960).

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

158828680 is a wasteful number, since it uses less digits than its factorization.

158828680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8589 (or 8585 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 46.

The square root of 158828680 is about 12602.7251021356. The cubic root of 158828680 is about 541.5555058150. Note that the first 4 decimals are identical.

The spelling of 158828680 in words is "one hundred fifty-eight million, eight hundred twenty-eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 491 982 1964 2455 3928 4910 8087 9820 16174 19640 32348 40435 64696 80870 161740 323480 3970717 7941434 15882868 19853585 31765736 39707170 79414340 158828680