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170989056 = 293471931
BaseRepresentation
bin10100011000100…
…01011000000000
3102220202010220000
422030101120000
5322233122211
624544520000
74144245240
oct1214213000
9386663800
10170989056
1188578677
1249320000
132956a574
14189cdb20
1510028656
hexa311600

170989056 has 400 divisors, whose sum is σ = 633768960. Its totient is φ = 44789760.

The previous prime is 170989051. The next prime is 170989057. The reversal of 170989056 is 650989071.

It is a super-2 number, since 2×1709890562 = 58474514543542272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170989051) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5515761 + ... + 5515791.

Almost surely, 2170989056 is an apocalyptic number.

170989056 is a gapful number since it is divisible by the number (16) 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 170989056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316884480).

170989056 is an abundant number, since it is smaller than the sum of its proper divisors (462779904).

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

170989056 is an equidigital number, since it uses as much as digits as its factorization.

170989056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 170989056 is about 13076.2783696280. The cubic root of 170989056 is about 555.0380689738.

The spelling of 170989056 in words is "one hundred seventy million, nine hundred eighty-nine thousand, fifty-six".