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28224053 = 1113197371
BaseRepresentation
bin110101110101…
…0101000110101
31222002221010022
41223222220311
524211132203
62444534525
7461620604
oct153525065
958087108
1028224053
1114a28170
129551445
135b02830
143a69a3b
152727a38
hex1aeaa35

28224053 has 8 divisors (see below), whose sum is σ = 33158496. Its totient is φ = 23684400.

The previous prime is 28224041. The next prime is 28224061. The reversal of 28224053 is 35042282.

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 28224053 - 212 = 28219957 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 (28224023) 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, 98543 + ... + 98828.

It is an arithmetic number, because the mean of its divisors is an integer number (4144812).

Almost surely, 228224053 is an apocalyptic number.

It is an amenable number.

28224053 is a deficient number, since it is larger than the sum of its proper divisors (4934443).

28224053 is a wasteful number, since it uses less digits than its factorization.

28224053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197395.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28224053 is about 5312.6314571971. The cubic root of 28224053 is about 304.4666950199.

The spelling of 28224053 in words is "twenty-eight million, two hundred twenty-four thousand, fifty-three".

Divisors: 1 11 13 143 197371 2171081 2565823 28224053