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69992744 = 2327893137
BaseRepresentation
bin1000010110000…
…00000100101000
311212200222222212
410023000010220
5120404231434
610540104252
71506633323
oct413000450
9155628885
1069992744
1136566648
121b535088
1311668433
14941d7ba
1562288ce
hex42c0128

69992744 has 16 divisors (see below), whose sum is σ = 131325300. Its totient is φ = 34972672.

The previous prime is 69992743. The next prime is 69992771. The reversal of 69992744 is 44729996.

It can be written as a sum of positive squares in 2 ways, for example, as 57304900 + 12687844 = 7570^2 + 3562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69992692 and 69992701.

It is not an unprimeable number, because it can be changed into a prime (69992743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20744 + ... + 23880.

Almost surely, 269992744 is an apocalyptic number.

It is an amenable number.

69992744 is a deficient number, since it is larger than the sum of its proper divisors (61332556).

69992744 is a wasteful number, since it uses less digits than its factorization.

69992744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932 (or 5928 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The square root of 69992744 is about 8366.1666251635. The cubic root of 69992744 is about 412.1142894668.

The spelling of 69992744 in words is "sixty-nine million, nine hundred ninety-two thousand, seven hundred forty-four".

Divisors: 1 2 4 8 2789 3137 5578 6274 11156 12548 22312 25096 8749093 17498186 34996372 69992744