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15428013013 = 79192398261
BaseRepresentation
bin11100101111001010…
…01100101111010101
31110211012112021011101
432113211030233111
5223044032404023
611030523510101
71054214642530
oct162745145725
943735467141
1015428013013
1165a7790586
122ba6988331
1315bb4180aa
14a64ddba17
156046ad1ad
hex39794cbd5

15428013013 has 8 divisors (see below), whose sum is σ = 17651208320. Its totient is φ = 13209616080.

The previous prime is 15428012987. The next prime is 15428013023. The reversal of 15428013013 is 31031082451.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 15428013013 - 25 = 15428012981 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 (15428013023) 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, 1192698 + ... + 1205563.

It is an arithmetic number, because the mean of its divisors is an integer number (2206401040).

Almost surely, 215428013013 is an apocalyptic number.

It is an amenable number.

15428013013 is a deficient number, since it is larger than the sum of its proper divisors (2223195307).

15428013013 is an equidigital number, since it uses as much as digits as its factorization.

15428013013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399187.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 15428013013 its reverse (31031082451), we get a palindrome (46459095464).

The spelling of 15428013013 in words is "fifteen billion, four hundred twenty-eight million, thirteen thousand, thirteen".

Divisors: 1 7 919 6433 2398261 16787827 2204001859 15428013013