Search a number
-
+
7990794492 = 2234391151651
BaseRepresentation
bin1110111000100100…
…11101100011111100
3202121220002102022120
413130102131203330
5112331120410432
63400530242540
7402006426642
oct73422354374
922556072276
107990794492
11343066019a
121670126450
139a466c085
1455b38d192
1531b7ccc2c
hex1dc49d8fc

7990794492 has 24 divisors (see below), whose sum is σ = 18649556352. Its totient is φ = 2662974000.

The previous prime is 7990794467. The next prime is 7990794499. The reversal of 7990794492 is 2944970997.

It is a super-2 number, since 2×79907944922 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990794499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23134 + ... + 128517.

It is an arithmetic number, because the mean of its divisors is an integer number (777064848).

Almost surely, 27990794492 is an apocalyptic number.

It is an amenable number.

7990794492 is an abundant number, since it is smaller than the sum of its proper divisors (10658761860).

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

7990794492 is a wasteful number, since it uses less digits than its factorization.

7990794492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156049 (or 156047 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 60.

The square root of 7990794492 is about 89391.2439336203. The cubic root of 7990794492 is about 1999.2325799042.

The spelling of 7990794492 in words is "seven billion, nine hundred ninety million, seven hundred ninety-four thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 4391 8782 13173 17564 26346 52692 151651 303302 454953 606604 909906 1819812 665899541 1331799082 1997698623 2663598164 3995397246 7990794492