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28613360 = 245357667
BaseRepresentation
bin110110100100…
…1101011110000
31222211201011002
41231021223300
524311111420
62501141132
7465131606
oct155115360
958751132
1028613360
1115173706
1296ba7a8
135c0aaa9
143b2b876
1527a3075
hex1b49af0

28613360 has 20 divisors (see below), whose sum is σ = 66526248. Its totient is φ = 11445312.

The previous prime is 28613339. The next prime is 28613369. The reversal of 28613360 is 6331682.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28613369) 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 3 ways as a sum of consecutive naturals, for example, 178754 + ... + 178913.

Almost surely, 228613360 is an apocalyptic number.

28613360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28613360 is an abundant number, since it is smaller than the sum of its proper divisors (37912888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28613360 is a wasteful number, since it uses less digits than its factorization.

28613360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357680 (or 357674 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 28613360 is about 5349.1457261884. The cubic root of 28613360 is about 305.8601893095.

The spelling of 28613360 in words is "twenty-eight million, six hundred thirteen thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 357667 715334 1430668 1788335 2861336 3576670 5722672 7153340 14306680 28613360