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89512080 = 2435753281
BaseRepresentation
bin1010101010111…
…01100010010000
320020102200111020
411111131202100
5140403341310
612514315440
72134561110
oct525354220
9206380436
1089512080
1146588829
1225b88b80
1315710b38
14bc61040
157cd2170
hex555d890

89512080 has 80 divisors (see below), whose sum is σ = 317134464. Its totient is φ = 20459520.

The previous prime is 89512069. The next prime is 89512081. The reversal of 89512080 is 8021598.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (89512081) 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, 24961 + ... + 28320.

Almost surely, 289512080 is an apocalyptic number.

89512080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89512080 is an abundant number, since it is smaller than the sum of its proper divisors (227622384).

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

89512080 is a wasteful number, since it uses less digits than its factorization.

89512080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53304 (or 53298 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 89512080 is about 9461.0823905090. The cubic root of 89512080 is about 447.3291671307.

The spelling of 89512080 in words is "eighty-nine million, five hundred twelve thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 53281 106562 159843 213124 266405 319686 372967 426248 532810 639372 745934 799215 852496 1065620 1118901 1278744 1491868 1598430 1864835 2131240 2237802 2557488 2983736 3196860 3729670 4262480 4475604 5594505 5967472 6393720 7459340 8951208 11189010 12787440 14918680 17902416 22378020 29837360 44756040 89512080