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64930080 = 2535135271
BaseRepresentation
bin1111011110110…
…0000100100000
311112011210022210
43313230010200
5113110230310
610235402120
71415616345
oct367540440
9145153283
1064930080
1133718a26
12198b3340
13105b4c87
1488a27cc
155a78820
hex3dec120

64930080 has 48 divisors (see below), whose sum is σ = 204531264. Its totient is φ = 17314560.

The previous prime is 64930051. The next prime is 64930109. The reversal of 64930080 is 8003946.

It is an interprime number because it is at equal distance from previous prime (64930051) and next prime (64930109).

It is a tau number, because it is divible by the number of its divisors (48).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67156 + ... + 68115.

It is an arithmetic number, because the mean of its divisors is an integer number (4261068).

Almost surely, 264930080 is an apocalyptic number.

64930080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64930080 is an abundant number, since it is smaller than the sum of its proper divisors (139601184).

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

64930080 is a wasteful number, since it uses less digits than its factorization.

64930080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135289 (or 135281 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 64930080 is about 8057.9203272308. The cubic root of 64930080 is about 401.9283553419.

The spelling of 64930080 in words is "sixty-four million, nine hundred thirty thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 135271 270542 405813 541084 676355 811626 1082168 1352710 1623252 2029065 2164336 2705420 3246504 4058130 4328672 5410840 6493008 8116260 10821680 12986016 16232520 21643360 32465040 64930080