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93091089 = 371319131137
BaseRepresentation
bin1011000110001…
…11010100010001
320111011111222010
411203013110101
5142312403324
613123133133
72210155410
oct543072421
9214144863
1093091089
1148602793
12272141a9
1316394bb0
14c513477
15828c829
hex58c7511

93091089 has 64 divisors (see below), whose sum is σ = 163215360. Its totient is φ = 45826560.

The previous prime is 93091021. The next prime is 93091129. The reversal of 93091089 is 98019039.

It is not a de Polignac number, because 93091089 - 27 = 93090961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (93091289) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 679429 + ... + 679565.

It is an arithmetic number, because the mean of its divisors is an integer number (2550240).

Almost surely, 293091089 is an apocalyptic number.

It is an amenable number.

93091089 is a deficient number, since it is larger than the sum of its proper divisors (70124271).

93091089 is a wasteful number, since it uses less digits than its factorization.

93091089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 93091089 is about 9648.3723497800. The cubic root of 93091089 is about 453.2133599164.

The spelling of 93091089 in words is "ninety-three million, ninety-one thousand, eighty-nine".

Divisors: 1 3 7 13 19 21 39 57 91 131 133 137 247 273 393 399 411 741 917 959 1703 1729 1781 2489 2603 2751 2877 5109 5187 5343 7467 7809 11921 12467 17423 17947 18221 32357 33839 35763 37401 52269 53841 54663 97071 101517 125629 226499 233311 236873 340993 376887 679497 699933 710619 1022979 1633177 2386951 4432909 4899531 7160853 13298727 31030363 93091089