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80713472 = 28773617
BaseRepresentation
bin1001100111110…
…01011100000000
312121212200001212
410303321130000
5131130312342
612001545252
72000024150
oct463713400
9177780055
1080713472
1141619254
1223045228
1313950068
14aa10760
157145182
hex4cf9700

80713472 has 72 divisors (see below), whose sum is σ = 186952416. Its totient is φ = 34062336.

The previous prime is 80713441. The next prime is 80713481. The reversal of 80713472 is 27431708.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 130508 + ... + 131124.

Almost surely, 280713472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80713472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93476208).

80713472 is an abundant number, since it is smaller than the sum of its proper divisors (106238944).

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

80713472 is an equidigital number, since it uses as much as digits as its factorization.

80713472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 80713472 is about 8984.0676756133. The cubic root of 80713472 is about 432.1640894710.

The spelling of 80713472 in words is "eighty million, seven hundred thirteen thousand, four hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 73 112 128 146 224 256 292 448 511 584 617 896 1022 1168 1234 1792 2044 2336 2468 4088 4319 4672 4936 8176 8638 9344 9872 16352 17276 18688 19744 32704 34552 39488 45041 65408 69104 78976 90082 130816 138208 157952 180164 276416 315287 360328 552832 630574 720656 1105664 1261148 1441312 2522296 2882624 5044592 5765248 10089184 11530496 20178368 40356736 80713472