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15242405380 = 22512743313859
BaseRepresentation
bin11100011001000010…
…01010011000000100
31110100021021102100121
432030201022120010
5222204023433010
611000253351324
71046502210436
oct161441123004
943307242317
1015242405380
116511a38844
122b54798544
13158bb2c9a7
14a484c4656
155e32483da
hex38c84a604

15242405380 has 48 divisors (see below), whose sum is σ = 32337930240. Its totient is φ = 6034549248.

The previous prime is 15242405369. The next prime is 15242405383. The reversal of 15242405380 is 8350424251.

It is a super-3 number, since 3×152424053803 (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (15242405383) 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, 1092891 + ... + 1106749.

It is an arithmetic number, because the mean of its divisors is an integer number (673706880).

Almost surely, 215242405380 is an apocalyptic number.

15242405380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15242405380 is an abundant number, since it is smaller than the sum of its proper divisors (17095524860).

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

15242405380 is a wasteful number, since it uses less digits than its factorization.

15242405380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428 (or 14426 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 15242405380 in words is "fifteen billion, two hundred forty-two million, four hundred five thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 127 254 433 508 635 866 1270 1732 2165 2540 4330 8660 13859 27718 54991 55436 69295 109982 138590 219964 274955 277180 549910 1099820 1760093 3520186 6000947 7040372 8800465 12001894 17600930 24003788 30004735 35201860 60009470 120018940 762120269 1524240538 3048481076 3810601345 7621202690 15242405380