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89280093 = 3731137143
BaseRepresentation
bin1010101001001…
…00111001011101
320012222220021010
411110210321131
5140323430333
612505325433
72132603550
oct524447135
9205886233
1089280093
114643a501
1225a96879
131565c376
14bc00697
157c88563
hex5524e5d

89280093 has 16 divisors (see below), whose sum is σ = 140435456. Its totient is φ = 49371120.

The previous prime is 89280077. The next prime is 89280097. The reversal of 89280093 is 39008298.

It is not a de Polignac number, because 89280093 - 24 = 89280077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89280097) 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, 67921 + ... + 69222.

It is an arithmetic number, because the mean of its divisors is an integer number (8777216).

Almost surely, 289280093 is an apocalyptic number.

It is an amenable number.

89280093 is a deficient number, since it is larger than the sum of its proper divisors (51155363).

89280093 is a wasteful number, since it uses less digits than its factorization.

89280093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137184.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 89280093 is about 9448.8143700678. The cubic root of 89280093 is about 446.9423875620.

The spelling of 89280093 in words is "eighty-nine million, two hundred eighty thousand, ninety-three".

Divisors: 1 3 7 21 31 93 217 651 137143 411429 960001 2880003 4251433 12754299 29760031 89280093