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80624983 = 411966463
BaseRepresentation
bin1001100111000…
…11110101010111
312121201011200111
410303203311113
5131114444413
612000023451
71666205155
oct463436527
9177634614
1080624983
114156881a
1223001b87
131391b9ba
14a9ca3d5
157128d3d
hex4ce3d57

80624983 has 4 divisors (see below), whose sum is σ = 82591488. Its totient is φ = 78658480.

The previous prime is 80624969. The next prime is 80624987. The reversal of 80624983 is 38942608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80624983 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80624987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983191 + ... + 983272.

It is an arithmetic number, because the mean of its divisors is an integer number (20647872).

Almost surely, 280624983 is an apocalyptic number.

80624983 is a deficient number, since it is larger than the sum of its proper divisors (1966505).

80624983 is a wasteful number, since it uses less digits than its factorization.

80624983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966504.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 80624983 is about 8979.1415513957. The cubic root of 80624983 is about 432.0060995224.

The spelling of 80624983 in words is "eighty million, six hundred twenty-four thousand, nine hundred eighty-three".

Divisors: 1 41 1966463 80624983