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121568070 = 23513311713
BaseRepresentation
bin1110011111011…
…11101101000110
322110202022001010
413033233231012
5222110134240
620021343050
73004211601
oct717575506
9273668033
10121568070
1162692988
1234867a86
131c255890
1412207338
15aa15280
hex73efb46

121568070 has 32 divisors (see below), whose sum is σ = 314207712. Its totient is φ = 29924352.

The previous prime is 121568053. The next prime is 121568093. The reversal of 121568070 is 70865121.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a congruent number.

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, 155467 + ... + 156246.

It is an arithmetic number, because the mean of its divisors is an integer number (9818991).

Almost surely, 2121568070 is an apocalyptic number.

121568070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121568070 is an abundant number, since it is smaller than the sum of its proper divisors (192639642).

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

121568070 is a wasteful number, since it uses less digits than its factorization.

121568070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311736.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 121568070 is about 11025.7911280778. The cubic root of 121568070 is about 495.3815647938.

The spelling of 121568070 in words is "one hundred twenty-one million, five hundred sixty-eight thousand, seventy".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 311713 623426 935139 1558565 1870278 3117130 4052269 4675695 8104538 9351390 12156807 20261345 24313614 40522690 60784035 121568070