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15230321453 = 373223718253
BaseRepresentation
bin11100010111100110…
…00100001100101101
31110022102112111022202
432023303010030231
5222142430241303
610555142351245
71046264411354
oct161363041455
943272474282
1015230321453
116506134a26
122b5072b525
13158948b739
14a46a5a99b
155e215cc88
hex38bcc432d

15230321453 has 8 divisors (see below), whose sum is σ = 15278817048. Its totient is φ = 15181867584.

The previous prime is 15230321417. The next prime is 15230321531. The reversal of 15230321453 is 35412303251.

It is a happy number.

15230321453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 636956644 + 14593364809 = 25238^2 + 120803^2 .

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 15230321453 - 224 = 15213544237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15230321053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825275 + ... + 843527.

It is an arithmetic number, because the mean of its divisors is an integer number (1909852131).

Almost surely, 215230321453 is an apocalyptic number.

It is an amenable number.

15230321453 is a deficient number, since it is larger than the sum of its proper divisors (48495595).

15230321453 is a wasteful number, since it uses less digits than its factorization.

15230321453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20863.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 15230321453 in words is "fifteen billion, two hundred thirty million, three hundred twenty-one thousand, four hundred fifty-three".

Divisors: 1 373 2237 18253 834401 6808369 40831961 15230321453