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28615741 = 711371633
BaseRepresentation
bin110110100101…
…0010000111101
31222211211102021
41231022100331
524311200431
62501200141
7465141550
oct155122075
958754367
1028615741
1115175480
129700051
135c0bbbb
143b2c697
1527a3b11
hex1b4a43d

28615741 has 8 divisors (see below), whose sum is σ = 35676864. Its totient is φ = 22297920.

The previous prime is 28615739. The next prime is 28615747. The reversal of 28615741 is 14751682.

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 28615741 - 21 = 28615739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28615697 and 28615706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28615747) 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, 185740 + ... + 185893.

It is an arithmetic number, because the mean of its divisors is an integer number (4459608).

Almost surely, 228615741 is an apocalyptic number.

It is an amenable number.

28615741 is a deficient number, since it is larger than the sum of its proper divisors (7061123).

28615741 is a wasteful number, since it uses less digits than its factorization.

28615741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371651.

The product of its digits is 13440, while the sum is 34.

The square root of 28615741 is about 5349.3682804608. The cubic root of 28615741 is about 305.8686729096.

The spelling of 28615741 in words is "twenty-eight million, six hundred fifteen thousand, seven hundred forty-one".

Divisors: 1 7 11 77 371633 2601431 4087963 28615741