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9991052 = 2231197409
BaseRepresentation
bin100110000111…
…001110001100
3200210121010222
4212013032030
510024203202
6554050512
7150631301
oct46071614
920717128
109991052
115704475
123419a38
1320ba786
1414810a8
15d254a2
hex98738c

9991052 has 24 divisors (see below), whose sum is σ = 18184320. Its totient is φ = 4798080.

The previous prime is 9991027. The next prime is 9991057. The reversal of 9991052 is 2501999.

It is a super-2 number, since 2×99910522 = 199642240133408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9991057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24224 + ... + 24632.

It is an arithmetic number, because the mean of its divisors is an integer number (757680).

Almost surely, 29991052 is an apocalyptic number.

It is an amenable number.

9991052 is a deficient number, since it is larger than the sum of its proper divisors (8193268).

9991052 is a wasteful number, since it uses less digits than its factorization.

9991052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 9991052 is about 3160.8625405101. The cubic root of 9991052 is about 215.3791902218.

The spelling of 9991052 in words is "nine million, nine hundred ninety-one thousand, fifty-two".

Divisors: 1 2 4 31 62 124 197 394 409 788 818 1636 6107 12214 12679 24428 25358 50716 80573 161146 322292 2497763 4995526 9991052