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15242614391 = 109661211559
BaseRepresentation
bin11100011001000011…
…11101011001110111
31110100021200001001202
432030201331121313
5222204102130031
611000302043115
71046504041004
oct161441753167
943307601052
1015242614391
116512070884
122b5487949b
13158bba3b74
14a4853a8ab
155e328a2cb
hex38c87d677

15242614391 has 8 divisors (see below), whose sum is σ = 15405799200. Its totient is φ = 15079854240.

The previous prime is 15242614381. The next prime is 15242614411. The reversal of 15242614391 is 19341624251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-15242614391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242614381) 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, 33731 + ... + 177828.

It is an arithmetic number, because the mean of its divisors is an integer number (1925724900).

Almost surely, 215242614391 is an apocalyptic number.

15242614391 is a deficient number, since it is larger than the sum of its proper divisors (163184809).

15242614391 is a wasteful number, since it uses less digits than its factorization.

15242614391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212329.

The product of its digits is 51840, while the sum is 38.

The spelling of 15242614391 in words is "fifteen billion, two hundred forty-two million, six hundred fourteen thousand, three hundred ninety-one".

Divisors: 1 109 661 72049 211559 23059931 139840499 15242614391