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89880680 = 2352937669
BaseRepresentation
bin1010101101101…
…11100001101000
320021010102010002
411112313201220
5141002140210
612530242132
72140654541
oct526674150
9207112102
1089880680
114680a75a
1226126348
131580c846
14bd194c8
157d564a5
hex55b7868

89880680 has 32 divisors (see below), whose sum is σ = 202948200. Its totient is φ = 35824896.

The previous prime is 89880671. The next prime is 89880689. The reversal of 89880680 is 8608898.

It is an interprime number because it is at equal distance from previous prime (89880671) and next prime (89880689).

It can be written as a sum of positive squares in 4 ways, for example, as 89151364 + 729316 = 9442^2 + 854^2 .

It is not an unprimeable number, because it can be changed into a prime (89880689) 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, 7886 + ... + 15554.

Almost surely, 289880680 is an apocalyptic number.

It is an amenable number.

89880680 is an abundant number, since it is smaller than the sum of its proper divisors (113067520).

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

89880680 is a wasteful number, since it uses less digits than its factorization.

89880680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7973 (or 7969 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The square root of 89880680 is about 9480.5421785887. The cubic root of 89880680 is about 447.9423421758.

The spelling of 89880680 in words is "eighty-nine million, eight hundred eighty thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 293 586 1172 1465 2344 2930 5860 7669 11720 15338 30676 38345 61352 76690 153380 306760 2247017 4494034 8988068 11235085 17976136 22470170 44940340 89880680