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89130197 = 1319360851
BaseRepresentation
bin1010101000000…
…00010011010101
320012201021122102
411110000103111
5140304131242
612502211445
72131410542
oct524002325
9205637572
1089130197
1146347922
1225a23b85
1315609080
14bba1bc9
157c58e32
hex55004d5

89130197 has 8 divisors (see below), whose sum is σ = 101038560. Its totient is φ = 77943600.

The previous prime is 89130169. The next prime is 89130203. The reversal of 89130197 is 79103198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-89130197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89130197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89130127) 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, 180179 + ... + 180672.

It is an arithmetic number, because the mean of its divisors is an integer number (12629820).

Almost surely, 289130197 is an apocalyptic number.

It is an amenable number.

89130197 is a deficient number, since it is larger than the sum of its proper divisors (11908363).

89130197 is a wasteful number, since it uses less digits than its factorization.

89130197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360883.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 89130197 is about 9440.8790374626. The cubic root of 89130197 is about 446.6921174949.

The spelling of 89130197 in words is "eighty-nine million, one hundred thirty thousand, one hundred ninety-seven".

Divisors: 1 13 19 247 360851 4691063 6856169 89130197