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28488053 = 1123112601
BaseRepresentation
bin110110010101…
…1000101110101
31222121100021002
41230223011311
524243104203
62454333045
7464100356
oct154530565
958540232
1028488053
1115098550
12965a185
135b95a49
143ad7d2d
15277ad88
hex1b2b175

28488053 has 8 divisors (see below), whose sum is σ = 32429376. Its totient is φ = 24772000.

The previous prime is 28488041. The next prime is 28488067. The reversal of 28488053 is 35088482.

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

It is not a de Polignac number, because 28488053 - 214 = 28471669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28487998 and 28488016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488023) 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, 56048 + ... + 56553.

It is an arithmetic number, because the mean of its divisors is an integer number (4053672).

Almost surely, 228488053 is an apocalyptic number.

28488053 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28488053 is a deficient number, since it is larger than the sum of its proper divisors (3941323).

28488053 is a wasteful number, since it uses less digits than its factorization.

28488053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112635.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 28488053 is about 5337.4200696591. The cubic root of 28488053 is about 305.4130496153.

It can be divided in two parts, 2848 and 8053, that added together give a palindrome (10901).

The spelling of 28488053 in words is "twenty-eight million, four hundred eighty-eight thousand, fifty-three".

Divisors: 1 11 23 253 112601 1238611 2589823 28488053