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67525140 = 22351125419
BaseRepresentation
bin1000000011001…
…01101000010100
311201001122002010
410001211220110
5114241301030
610411144220
71446645204
oct401455024
9151048063
1067525140
1135130701
121a745070
1310cb3207
148d7a404
155ddc6b0
hex4065a14

67525140 has 24 divisors (see below), whose sum is σ = 189070560. Its totient is φ = 18006688.

The previous prime is 67525123. The next prime is 67525147. The reversal of 67525140 is 4152576.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 67525098 and 67525107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67525147) 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, 562650 + ... + 562769.

It is an arithmetic number, because the mean of its divisors is an integer number (7877940).

Almost surely, 267525140 is an apocalyptic number.

67525140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67525140 is an abundant number, since it is smaller than the sum of its proper divisors (121545420).

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

67525140 is a wasteful number, since it uses less digits than its factorization.

67525140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125431 (or 1125429 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 67525140 is about 8217.3681918239. The cubic root of 67525140 is about 407.2131847031.

The spelling of 67525140 in words is "sixty-seven million, five hundred twenty-five thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1125419 2250838 3376257 4501676 5627095 6752514 11254190 13505028 16881285 22508380 33762570 67525140