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78250333 = 775714767
BaseRepresentation
bin1001010101000…
…00000101011101
312110020112021111
410222200011131
5130013002313
611433102021
71640055040
oct452400535
9173215244
1078250333
11401966a7
1222257911
1313299b95
14a56cc57
156d0a43d
hex4aa015d

78250333 has 8 divisors (see below), whose sum is σ = 89553152. Its totient is φ = 66978576.

The previous prime is 78250327. The next prime is 78250339. The reversal of 78250333 is 33305287.

It is an interprime number because it is at equal distance from previous prime (78250327) and next prime (78250339).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78250333 - 213 = 78242141 is a prime.

It is a super-2 number, since 2×782503332 = 12246229229221778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78250295 and 78250304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78250339) 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, 2085 + ... + 12682.

It is an arithmetic number, because the mean of its divisors is an integer number (11194144).

Almost surely, 278250333 is an apocalyptic number.

It is an amenable number.

78250333 is a deficient number, since it is larger than the sum of its proper divisors (11302819).

78250333 is a wasteful number, since it uses less digits than its factorization.

78250333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15531.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 78250333 is about 8845.9218287299. The cubic root of 78250333 is about 427.7224687073.

It can be divided in two parts, 782 and 50333, that added together give a palindrome (51115).

The spelling of 78250333 in words is "seventy-eight million, two hundred fifty thousand, three hundred thirty-three".

Divisors: 1 7 757 5299 14767 103369 11178619 78250333