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89580421 = 7193121727
BaseRepresentation
bin1010101011011…
…10001110000101
320020120011020101
411111232032011
5140413033141
612520004101
72135264260
oct525561605
9206504211
1089580421
1146625107
1226000631
1315735c88
14bc7bcd7
157ce7531
hex556e385

89580421 has 16 divisors (see below), whose sum is σ = 111247360. Its totient is φ = 70392240.

The previous prime is 89580419. The next prime is 89580427. The reversal of 89580421 is 12408598.

It is a cyclic number.

It is not a de Polignac number, because 89580421 - 21 = 89580419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89580427) 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, 6741 + ... + 14986.

It is an arithmetic number, because the mean of its divisors is an integer number (6952960).

Almost surely, 289580421 is an apocalyptic number.

It is an amenable number.

89580421 is a deficient number, since it is larger than the sum of its proper divisors (21666939).

89580421 is a wasteful number, since it uses less digits than its factorization.

89580421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21784.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 89580421 is about 9464.6933917587. The cubic root of 89580421 is about 447.4429809898.

The spelling of 89580421 in words is "eighty-nine million, five hundred eighty thousand, four hundred twenty-one".

Divisors: 1 7 19 31 133 217 589 4123 21727 152089 412813 673537 2889691 4714759 12797203 89580421