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80471612 = 221319791031
BaseRepresentation
bin1001100101111…
…10011000111100
312121102101022002
410302332120330
5131100042422
611552441432
71664666054
oct462763074
9177371262
1080471612
1141473571
1222b49278
1313896c50
14a98a564
1570e8692
hex4cbe63c

80471612 has 48 divisors (see below), whose sum is σ = 161817600. Its totient is φ = 34706880.

The previous prime is 80471609. The next prime is 80471617. The reversal of 80471612 is 21617408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80471617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77537 + ... + 78567.

It is an arithmetic number, because the mean of its divisors is an integer number (3371200).

Almost surely, 280471612 is an apocalyptic number.

It is an amenable number.

80471612 is an abundant number, since it is smaller than the sum of its proper divisors (81345988).

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

80471612 is a wasteful number, since it uses less digits than its factorization.

80471612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 80471612 is about 8970.5970815771. The cubic root of 80471612 is about 431.7319939757.

The spelling of 80471612 in words is "eighty million, four hundred seventy-one thousand, six hundred twelve".

Divisors: 1 2 4 13 19 26 38 52 76 79 158 247 316 494 988 1027 1031 1501 2054 2062 3002 4108 4124 6004 13403 19513 19589 26806 39026 39178 53612 78052 78356 81449 162898 254657 325796 509314 1018628 1058837 1547531 2117674 3095062 4235348 6190124 20117903 40235806 80471612