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28464413 = 1912171231
BaseRepresentation
bin110110010010…
…1010100011101
31222120010211112
41230211110131
524241330123
62454031405
7463641425
oct154452435
958503745
1028464413
111508180a
129648565
135b88063
143acd485
152773d78
hex1b2551d

28464413 has 8 divisors (see below), whose sum is σ = 30011520. Its totient is φ = 26922240.

The previous prime is 28464377. The next prime is 28464419. The reversal of 28464413 is 31446482.

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

It is not a de Polignac number, because 28464413 - 26 = 28464349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28464413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28464419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22508 + ... + 23738.

It is an arithmetic number, because the mean of its divisors is an integer number (3751440).

Almost surely, 228464413 is an apocalyptic number.

It is an amenable number.

28464413 is a deficient number, since it is larger than the sum of its proper divisors (1547107).

28464413 is a wasteful number, since it uses less digits than its factorization.

28464413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467.

The product of its digits is 18432, while the sum is 32.

The square root of 28464413 is about 5335.2050569777. The cubic root of 28464413 is about 305.3285467946.

The spelling of 28464413 in words is "twenty-eight million, four hundred sixty-four thousand, four hundred thirteen".

Divisors: 1 19 1217 1231 23123 23389 1498127 28464413