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80039930 = 2561131213
BaseRepresentation
bin1001100010101…
…00111111111010
312120121110010212
410301110333322
5130442234210
611535311122
71661220365
oct461247772
9176543125
1080039930
11411a9203
122297b4a2
1313775609
14a8b70dc
157060805
hex4c54ffa

80039930 has 16 divisors (see below), whose sum is σ = 146434824. Its totient is φ = 31490880.

The previous prime is 80039929. The next prime is 80039957. The reversal of 80039930 is 3993008.

It can be written as a sum of positive squares in 4 ways, for example, as 67387681 + 12652249 = 8209^2 + 3557^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64997 + ... + 66216.

Almost surely, 280039930 is an apocalyptic number.

80039930 is a deficient number, since it is larger than the sum of its proper divisors (66394894).

80039930 is a wasteful number, since it uses less digits than its factorization.

80039930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131281.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 80039930 is about 8946.5037863961. The cubic root of 80039930 is about 430.9586148968.

The spelling of 80039930 in words is "eighty million, thirty-nine thousand, nine hundred thirty".

Divisors: 1 2 5 10 61 122 305 610 131213 262426 656065 1312130 8003993 16007986 40019965 80039930