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78293941 = 1131229601
BaseRepresentation
bin1001010101010…
…10101110110101
312110022202002121
410222222232311
5130020401231
611434035541
71640326135
oct452525665
9173282077
1078293941
1140216440
1222278bb1
13132b399b
14a580ac5
156d18311
hex4aaabb5

78293941 has 8 divisors (see below), whose sum is σ = 88167168. Its totient is φ = 68880000.

The previous prime is 78293899. The next prime is 78293981. The reversal of 78293941 is 14939287.

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

It is a cyclic number.

It is not a de Polignac number, because 78293941 - 211 = 78291893 is a prime.

It is a super-2 number, since 2×782939412 = 12259882394622962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78293981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114460 + ... + 115141.

It is an arithmetic number, because the mean of its divisors is an integer number (11020896).

Almost surely, 278293941 is an apocalyptic number.

It is an amenable number.

78293941 is a deficient number, since it is larger than the sum of its proper divisors (9873227).

78293941 is a wasteful number, since it uses less digits than its factorization.

78293941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229643.

The product of its digits is 108864, while the sum is 43.

The square root of 78293941 is about 8848.3863500641. The cubic root of 78293941 is about 427.8019088703.

The spelling of 78293941 in words is "seventy-eight million, two hundred ninety-three thousand, nine hundred forty-one".

Divisors: 1 11 31 341 229601 2525611 7117631 78293941