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28456941 = 322434229
BaseRepresentation
bin110110010001…
…1011111101101
31222112202120210
41230203133231
524241110231
62453533033
7463610562
oct154433755
958482523
1028456941
1115077137
129644179
135b84836
143aca869
152771a46
hex1b237ed

28456941 has 8 divisors (see below), whose sum is σ = 37968480. Its totient is φ = 18958352.

The previous prime is 28456921. The next prime is 28456951. The reversal of 28456941 is 14965482.

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 28456941 - 215 = 28424173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28456941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28456921) 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, 4615 + ... + 8843.

It is an arithmetic number, because the mean of its divisors is an integer number (4746060).

Almost surely, 228456941 is an apocalyptic number.

It is an amenable number.

28456941 is a deficient number, since it is larger than the sum of its proper divisors (9511539).

28456941 is a wasteful number, since it uses less digits than its factorization.

28456941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475.

The product of its digits is 69120, while the sum is 39.

The square root of 28456941 is about 5334.5047567698. The cubic root of 28456941 is about 305.3018278812.

The spelling of 28456941 in words is "twenty-eight million, four hundred fifty-six thousand, nine hundred forty-one".

Divisors: 1 3 2243 4229 6729 12687 9485647 28456941