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15389260242 = 238330902129
BaseRepresentation
bin11100101010100010…
…10111100111010010
31110201111121102100120
432111101113213102
5223004122311432
611023021131110
71053234360636
oct162521274722
943644542316
1015389260242
116587921aa4
122b959b9a96
1315b339a165
14a5dbd0dc6
156010a5c2c
hex3954579d2

15389260242 has 16 divisors (see below), whose sum is σ = 31149347040. Its totient is φ = 5067948992.

The previous prime is 15389260231. The next prime is 15389260247. The reversal of 15389260242 is 24206298351.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 15389260194 and 15389260203.

It is not an unprimeable number, because it can be changed into a prime (15389260247) 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, 15450567 + ... + 15451562.

It is an arithmetic number, because the mean of its divisors is an integer number (1946834190).

Almost surely, 215389260242 is an apocalyptic number.

15389260242 is an abundant number, since it is smaller than the sum of its proper divisors (15760086798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15389260242 is a wasteful number, since it uses less digits than its factorization.

15389260242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30902217.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 15389260242 in words is "fifteen billion, three hundred eighty-nine million, two hundred sixty thousand, two hundred forty-two".

Divisors: 1 2 3 6 83 166 249 498 30902129 61804258 92706387 185412774 2564876707 5129753414 7694630121 15389260242