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69898080 = 2535771293
BaseRepresentation
bin1000010101010…
…00111101100000
311212112012010210
410022220331200
5120343214310
610534054120
71506060330
oct412507540
9155465123
1069898080
113650150a
121b4aa340
1311634315
1493d70c0
15620a820
hex42a8f60

69898080 has 192 divisors, whose sum is σ = 256048128. Its totient is φ = 15697920.

The previous prime is 69898061. The next prime is 69898097. The reversal of 69898080 is 8089896.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238414 + ... + 238706.

It is an arithmetic number, because the mean of its divisors is an integer number (1333584).

Almost surely, 269898080 is an apocalyptic number.

69898080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69898080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128024064).

69898080 is an abundant number, since it is smaller than the sum of its proper divisors (186150048).

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

69898080 is a wasteful number, since it uses less digits than its factorization.

69898080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 69898080 is about 8360.5071616499. The cubic root of 69898080 is about 411.9284131128.

The spelling of 69898080 in words is "sixty-nine million, eight hundred ninety-eight thousand, eighty".