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80308933 = 187142923
BaseRepresentation
bin1001100100101…
…10101011000101
312121010010010221
410302112223011
5131024341213
611545144341
71663420555
oct462265305
9177103127
1080308933
1141372321
1222a8b0b1
131383aba3
14a947165
1570b538d
hex4c96ac5

80308933 has 4 divisors (see below), whose sum is σ = 80353728. Its totient is φ = 80264140.

The previous prime is 80308913. The next prime is 80308937. The reversal of 80308933 is 33980308.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80308933 - 217 = 80177861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80308937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19591 + ... + 23332.

It is an arithmetic number, because the mean of its divisors is an integer number (20088432).

Almost surely, 280308933 is an apocalyptic number.

It is an amenable number.

80308933 is a deficient number, since it is larger than the sum of its proper divisors (44795).

80308933 is a wasteful number, since it uses less digits than its factorization.

80308933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44794.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 80308933 is about 8961.5251492143. The cubic root of 80308933 is about 431.4408722248.

The spelling of 80308933 in words is "eighty million, three hundred eight thousand, nine hundred thirty-three".

Divisors: 1 1871 42923 80308933