Search a number
-
+
7990213248 = 2737172373
BaseRepresentation
bin1110111000100000…
…01111101010000000
3202121211222220000000
413130100033222000
5112330443310443
63400510000000
7402001456233
oct73420175200
922554886000
107990213248
1134302a3526
12166baa6000
139a44c7644
1455b27b41a
1531b7158d3
hex1dc40fa80

7990213248 has 512 divisors, whose sum is σ = 26738035200. Its totient is φ = 2364899328.

The previous prime is 7990213247. The next prime is 7990213249. The reversal of 7990213248 is 8423120997.

It is an interprime number because it is at equal distance from previous prime (7990213247) and next prime (7990213249).

It is not an unprimeable number, because it can be changed into a prime (7990213247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109454940 + ... + 109455012.

It is an arithmetic number, because the mean of its divisors is an integer number (52222725).

Almost surely, 27990213248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7990213248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13369017600).

7990213248 is an abundant number, since it is smaller than the sum of its proper divisors (18747821952).

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

7990213248 is an equidigital number, since it uses as much as digits as its factorization.

7990213248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 7990213248 is about 89387.9927507045. The cubic root of 7990213248 is about 1999.1841045359.

The spelling of 7990213248 in words is "seven billion, nine hundred ninety million, two hundred thirteen thousand, two hundred forty-eight".