Search a number
-
+
1906125740 = 225811117517
BaseRepresentation
bin111000110011101…
…0010101110101100
311220211201012221122
41301213102232230
512400432010430
6513050520112
765143541621
oct16147225654
94824635848
101906125740
11898a5a532
12452436038
13244b99b6c
14141220348
15b251cee5
hex719d2bac

1906125740 has 24 divisors (see below), whose sum is σ = 4007833872. Its totient is φ = 761503680.

The previous prime is 1906125721. The next prime is 1906125751. The reversal of 1906125740 is 475216091.

It is a self number, because there is not a number n which added to its sum of digits gives 1906125740.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42539 + ... + 74978.

It is an arithmetic number, because the mean of its divisors is an integer number (166993078).

Almost surely, 21906125740 is an apocalyptic number.

1906125740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1906125740 is an abundant number, since it is smaller than the sum of its proper divisors (2101708132).

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

1906125740 is a wasteful number, since it uses less digits than its factorization.

1906125740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118337 (or 118335 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1906125740 is about 43659.1999468611. The cubic root of 1906125740 is about 1239.8919737665.

The spelling of 1906125740 in words is "one billion, nine hundred six million, one hundred twenty-five thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 811 1622 3244 4055 8110 16220 117517 235034 470068 587585 1175170 2350340 95306287 190612574 381225148 476531435 953062870 1906125740