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7997233 = 19222153
BaseRepresentation
bin11110100000011100110001
3120001022010211
4132200130301
54021402413
6443224121
7124655356
oct36403461
916038124
107997233
114572492
122818041
1318700ba
1410c262d
15a7e83d
hex7a0731

7997233 has 6 divisors (see below), whose sum is σ = 8440674. Its totient is φ = 7575984.

The previous prime is 7997219. The next prime is 7997237. The reversal of 7997233 is 3327997.

It can be written as a sum of positive squares in only one way, i.e., 4941729 + 3055504 = 2223^2 + 1748^2 .

It is not a de Polignac number, because 7997233 - 25 = 7997201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7997237) 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 5 ways as a sum of consecutive naturals, for example, 10716 + ... + 11437.

It is an arithmetic number, because the mean of its divisors is an integer number (1406779).

Almost surely, 27997233 is an apocalyptic number.

It is an amenable number.

7997233 is a deficient number, since it is larger than the sum of its proper divisors (443441).

7997233 is a wasteful number, since it uses less digits than its factorization.

7997233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22191 (or 22172 counting only the distinct ones).

The product of its digits is 71442, while the sum is 40.

The square root of 7997233 is about 2827.9379413276. The cubic root of 7997233 is about 199.9769390077.

The spelling of 7997233 in words is "seven million, nine hundred ninety-seven thousand, two hundred thirty-three".

Divisors: 1 19 361 22153 420907 7997233