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83055040 = 265259547
BaseRepresentation
bin1001111001101…
…01000111000000
312210021122002121
410330311013000
5132230230130
612124054024
72025645655
oct474650700
9183248077
1083055040
1142978532
1223994314
131428cac3
14b05dc2c
157458d7a
hex4f351c0

83055040 has 28 divisors (see below), whose sum is σ = 197775576. Its totient is φ = 33221888.

The previous prime is 83055031. The next prime is 83055083. The reversal of 83055040 is 4055038.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 83054996 and 83055014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129454 + ... + 130093.

Almost surely, 283055040 is an apocalyptic number.

83055040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83055040 is an abundant number, since it is smaller than the sum of its proper divisors (114720536).

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

83055040 is a wasteful number, since it uses less digits than its factorization.

83055040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259564 (or 259554 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 83055040 is about 9113.4537909620. The cubic root of 83055040 is about 436.3034668721.

The spelling of 83055040 in words is "eighty-three million, fifty-five thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 259547 519094 1038188 1297735 2076376 2595470 4152752 5190940 8305504 10381880 16611008 20763760 41527520 83055040