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73680430 = 258982787
BaseRepresentation
bin1000110010001…
…00011000101110
312010122100112211
410121010120232
5122330233210
611151121034
71553162515
oct431043056
9163570484
1073680430
113865521a
122081317a
1312359ab5
149add67c
15670638a
hex464462e

73680430 has 16 divisors (see below), whose sum is σ = 134116560. Its totient is φ = 29140672.

The previous prime is 73680419. The next prime is 73680469. The reversal of 73680430 is 3408637.

It is a junction number, because it is equal to n+sod(n) for n = 73680392 and 73680401.

It is a congruent number.

It is an unprimeable number.

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, 40504 + ... + 42283.

It is an arithmetic number, because the mean of its divisors is an integer number (8382285).

Almost surely, 273680430 is an apocalyptic number.

73680430 is a deficient number, since it is larger than the sum of its proper divisors (60436130).

73680430 is a wasteful number, since it uses less digits than its factorization.

73680430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82883.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 73680430 is about 8583.7305409711. The cubic root of 73680430 is about 419.2284208959.

The spelling of 73680430 in words is "seventy-three million, six hundred eighty thousand, four hundred thirty".

Divisors: 1 2 5 10 89 178 445 890 82787 165574 413935 827870 7368043 14736086 36840215 73680430