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2991351052 = 22747837763
BaseRepresentation
bin1011001001001100…
…0110010100001100
321201110202101012201
42302103012110030
522111241213202
61212455011244
7134062031044
oct26223062414
97643671181
102991351052
1112a55a3358
126b5969b24
13388976911
142053d4724
15127936387
hexb24c650c

2991351052 has 6 divisors (see below), whose sum is σ = 5234864348. Its totient is φ = 1495675524.

The previous prime is 2991351047. The next prime is 2991351053. The reversal of 2991351052 is 2501531992.

It is a super-2 number, since 2×29913510522 = 17896362232603013408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2991351053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373918878 + ... + 373918885.

Almost surely, 22991351052 is an apocalyptic number.

It is an amenable number.

2991351052 is a deficient number, since it is larger than the sum of its proper divisors (2243513296).

2991351052 is a wasteful number, since it uses less digits than its factorization.

2991351052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747837767 (or 747837765 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 2991351052 is about 54693.2450308080. The cubic root of 2991351052 is about 1440.8622427342.

The spelling of 2991351052 in words is "two billion, nine hundred ninety-one million, three hundred fifty-one thousand, fifty-two".

Divisors: 1 2 4 747837763 1495675526 2991351052