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80331960 = 2335669433
BaseRepresentation
bin1001100100111…
…00010010111000
312121011021201210
410302130102320
5131031110320
611545443120
71663544652
oct462342270
9177137653
1080331960
1141388655
1222aa04a0
1313848507
14a9516d2
1570bc0e0
hex4c9c4b8

80331960 has 32 divisors (see below), whose sum is σ = 240996240. Its totient is φ = 21421824.

The previous prime is 80331949. The next prime is 80331961. The reversal of 80331960 is 6913308.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80331961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334597 + ... + 334836.

Almost surely, 280331960 is an apocalyptic number.

It is an amenable number.

80331960 is an abundant number, since it is smaller than the sum of its proper divisors (160664280).

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

80331960 is a wasteful number, since it uses less digits than its factorization.

80331960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669447 (or 669443 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 80331960 is about 8962.8098272807. The cubic root of 80331960 is about 431.4821039999.

The spelling of 80331960 in words is "eighty million, three hundred thirty-one thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 669433 1338866 2008299 2677732 3347165 4016598 5355464 6694330 8033196 10041495 13388660 16066392 20082990 26777320 40165980 80331960