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28080048 = 24331113167
BaseRepresentation
bin110101100011…
…1011110110000
31221211121120210
41223013132300
524142030143
62441504120
7460451013
oct153073660
957747523
1028080048
1114939a57
1294a2040
135a82119
143a2d37a
1526ea033
hex1ac77b0

28080048 has 80 divisors (see below), whose sum is σ = 75995136. Its totient is φ = 8924160.

The previous prime is 28080037. The next prime is 28080053. The reversal of 28080048 is 84008082.

It is a junction number, because it is equal to n+sod(n) for n = 28079997 and 28080024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168061 + ... + 168227.

Almost surely, 228080048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28080048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37997568).

28080048 is an abundant number, since it is smaller than the sum of its proper divisors (47915088).

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

28080048 is a wasteful number, since it uses less digits than its factorization.

28080048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 28080048 is about 5299.0610489029. The cubic root of 28080048 is about 303.9479943356.

The spelling of 28080048 in words is "twenty-eight million, eighty thousand, forty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 31 48 62 93 113 124 167 186 226 248 334 339 372 452 496 501 668 678 744 904 1002 1336 1356 1488 1808 2004 2672 2712 3503 4008 5177 5424 7006 8016 10354 10509 14012 15531 18871 20708 21018 28024 31062 37742 41416 42036 56048 56613 62124 75484 82832 84072 113226 124248 150968 168144 226452 248496 301936 452904 585001 905808 1170002 1755003 2340004 3510006 4680008 7020012 9360016 14040024 28080048