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80298078 = 2375873257
BaseRepresentation
bin1001100100101…
…00000001011110
312121002120020220
410302110001132
5131024014303
611545022210
71663344120
oct462240136
9177076226
1080298078
1141365153
1222a84966
1313835c73
14a943210
1570b2053
hex4c9405e

80298078 has 32 divisors (see below), whose sum is σ = 183907584. Its totient is φ = 22896192.

The previous prime is 80298073. The next prime is 80298107. The reversal of 80298078 is 87089208.

It is a happy number.

It is a super-3 number, since 3×802980783 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80298073) 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 15 ways as a sum of consecutive naturals, for example, 23026 + ... + 26282.

It is an arithmetic number, because the mean of its divisors is an integer number (5747112).

Almost surely, 280298078 is an apocalyptic number.

80298078 is an abundant number, since it is smaller than the sum of its proper divisors (103609506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80298078 is a wasteful number, since it uses less digits than its factorization.

80298078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 80298078 is about 8960.9194840708. The cubic root of 80298078 is about 431.4214327033.

The spelling of 80298078 in words is "eighty million, two hundred ninety-eight thousand, seventy-eight".

Divisors: 1 2 3 6 7 14 21 42 587 1174 1761 3257 3522 4109 6514 8218 9771 12327 19542 22799 24654 45598 68397 136794 1911859 3823718 5735577 11471154 13383013 26766026 40149039 80298078