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47928825 = 3252730431
BaseRepresentation
bin1011011011010…
…1010111111001
310100012000222200
42312311113321
544232210300
64431140413
71121250120
oct266652771
9110160880
1047928825
11250666aa
1214074709
139c11769
146518ab7
15431b200
hex2db55f9

47928825 has 36 divisors (see below), whose sum is σ = 98112768. Its totient is φ = 21909600.

The previous prime is 47928817. The next prime is 47928841. The reversal of 47928825 is 52882974.

It is not a de Polignac number, because 47928825 - 23 = 47928817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13641 + ... + 16790.

Almost surely, 247928825 is an apocalyptic number.

47928825 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47928825 is an abundant number, since it is smaller than the sum of its proper divisors (50183943).

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

47928825 is a wasteful number, since it uses less digits than its factorization.

47928825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30454 (or 30446 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 47928825 is about 6923.0647115277. The cubic root of 47928825 is about 363.2443997654.

The spelling of 47928825 in words is "forty-seven million, nine hundred twenty-eight thousand, eight hundred twenty-five".

Divisors: 1 3 5 7 9 15 21 25 35 45 63 75 105 175 225 315 525 1575 30431 91293 152155 213017 273879 456465 639051 760775 1065085 1369395 1917153 2282325 3195255 5325425 6846975 9585765 15976275 47928825