Search a number
-
+
2128149307 = 85912831931
BaseRepresentation
bin111111011011000…
…1111101100111011
312111022111012000201
41332312033230323
513324301234212
6551101343031
7103510653634
oct17666175473
95438435021
102128149307
119a2315089
124b4867a77
1327bb9565b
141628d688b
15c6c77b57
hex7ed8fb3b

2128149307 has 8 divisors (see below), whose sum is σ = 2133391680. Its totient is φ = 2122915080.

The previous prime is 2128149259. The next prime is 2128149319. The reversal of 2128149307 is 7039418212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2128149307 - 215 = 2128116539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128149337) 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, 1101132 + ... + 1103062.

It is an arithmetic number, because the mean of its divisors is an integer number (266673960).

Almost surely, 22128149307 is an apocalyptic number.

2128149307 is a deficient number, since it is larger than the sum of its proper divisors (5242373).

2128149307 is a wasteful number, since it uses less digits than its factorization.

2128149307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2128149307 is about 46131.8686701504. The cubic root of 2128149307 is about 1286.2755998812.

The spelling of 2128149307 in words is "two billion, one hundred twenty-eight million, one hundred forty-nine thousand, three hundred seven".

Divisors: 1 859 1283 1931 1102097 1658729 2477473 2128149307