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2142199748 = 221354377577
BaseRepresentation
bin111111110101111…
…0101111111000100
312112021221000121102
41333223311333010
513341400342443
6552322435232
7104041253213
oct17753657704
95467830542
102142199748
119aa241417
124b9502b18
13281a74a20
1416471307a
15c8100cb8
hex7faf5fc4

2142199748 has 24 divisors (see below), whose sum is σ = 4038498072. Its totient is φ = 988395264.

The previous prime is 2142199747. The next prime is 2142199817. The reversal of 2142199748 is 8479912412.

It can be written as a sum of positive squares in 4 ways, for example, as 31899904 + 2110299844 = 5648^2 + 45938^2 .

It is not an unprimeable number, because it can be changed into a prime (2142199747) 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, 278936 + ... + 286512.

It is an arithmetic number, because the mean of its divisors is an integer number (168270753).

Almost surely, 22142199748 is an apocalyptic number.

It is an amenable number.

2142199748 is a deficient number, since it is larger than the sum of its proper divisors (1896298324).

2142199748 is a wasteful number, since it uses less digits than its factorization.

2142199748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031 (or 13029 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 2142199748 is about 46283.9037679408. The cubic root of 2142199748 is about 1289.1001372082.

The spelling of 2142199748 in words is "two billion, one hundred forty-two million, one hundred ninety-nine thousand, seven hundred forty-eight".

Divisors: 1 2 4 13 26 52 5437 7577 10874 15154 21748 30308 70681 98501 141362 197002 282724 394004 41196149 82392298 164784596 535549937 1071099874 2142199748