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245019093 = 31115149171
BaseRepresentation
bin11101001101010…
…11000111010101
3122002001021000020
432212223013111
51000211102333
640151335353
76033425244
oct1646530725
9562037006
10245019093
11116341520
126a081559
133b9ba517
142478095b
151679d3b3
hexe9ab1d5

245019093 has 16 divisors (see below), whose sum is σ = 358758912. Its totient is φ = 147510000.

The previous prime is 245019091. The next prime is 245019101. The reversal of 245019093 is 390910542.

It is not a de Polignac number, because 245019093 - 21 = 245019091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245019091) 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, 19603 + ... + 29568.

It is an arithmetic number, because the mean of its divisors is an integer number (22422432).

Almost surely, 2245019093 is an apocalyptic number.

It is an amenable number.

245019093 is a deficient number, since it is larger than the sum of its proper divisors (113739819).

245019093 is a wasteful number, since it uses less digits than its factorization.

245019093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49336.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 245019093 is about 15653.0857341292. The cubic root of 245019093 is about 625.7487287170.

The spelling of 245019093 in words is "two hundred forty-five million, nineteen thousand, ninety-three".

Divisors: 1 3 11 33 151 453 1661 4983 49171 147513 540881 1622643 7424821 22274463 81673031 245019093