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69896780 = 2253494839
BaseRepresentation
bin1000010101010…
…00101001001100
311212112010100122
410022220221030
5120343144110
610534044112
71506053462
oct412505114
9155463318
1069896780
1136500538
121b4a9638
1311633855
1493d6832
15620a255
hex42a8a4c

69896780 has 12 divisors (see below), whose sum is σ = 146783280. Its totient is φ = 27958704.

The previous prime is 69896767. The next prime is 69896797. The reversal of 69896780 is 8769896.

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, 1747400 + ... + 1747439.

It is an arithmetic number, because the mean of its divisors is an integer number (12231940).

Almost surely, 269896780 is an apocalyptic number.

It is an amenable number.

69896780 is an abundant number, since it is smaller than the sum of its proper divisors (76886500).

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

69896780 is a wasteful number, since it uses less digits than its factorization.

69896780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494848 (or 3494846 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 69896780 is about 8360.4294148088. The cubic root of 69896780 is about 411.9258593457.

The spelling of 69896780 in words is "sixty-nine million, eight hundred ninety-six thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 3494839 6989678 13979356 17474195 34948390 69896780