Search a number
-
+
2920509907 = 723112715139
BaseRepresentation
bin1010111000010011…
…0111000111010011
321112112110021102121
42232010313013103
521440122304112
61201444355111
7132241632100
oct25604670723
97475407377
102920509907
111269608357
126960a5a97
133770a2293
141d9c33aa7
151215e1407
hexae1371d3

2920509907 has 24 divisors (see below), whose sum is σ = 3534766080. Its totient is φ = 2403308880.

The previous prime is 2920509859. The next prime is 2920509913. The reversal of 2920509907 is 7099050292.

It is a de Polignac number, because none of the positive numbers 2k-2920509907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2920509997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185344 + ... + 200482.

It is an arithmetic number, because the mean of its divisors is an integer number (147281920).

Almost surely, 22920509907 is an apocalyptic number.

2920509907 is a deficient number, since it is larger than the sum of its proper divisors (614256173).

2920509907 is a wasteful number, since it uses less digits than its factorization.

2920509907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15311 (or 15304 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 2920509907 is about 54041.7422646606. The cubic root of 2920509907 is about 1429.3970932269.

The spelling of 2920509907 in words is "two billion, nine hundred twenty million, five hundred nine thousand, nine hundred seven".

Divisors: 1 7 31 49 127 217 889 1519 3937 6223 15139 27559 105973 192913 469309 741811 1922653 3285163 13458571 22996141 59602243 94209997 417215701 2920509907