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8970081 = 32990027
BaseRepresentation
bin100010001101…
…111101100001
3121212201122020
4202031331201
54244020311
6520132053
7136146561
oct42157541
917781566
108970081
11507739a
123007029
131b20b53
141296da1
15bc2c06
hex88df61

8970081 has 4 divisors (see below), whose sum is σ = 11960112. Its totient is φ = 5980052.

The previous prime is 8970047. The next prime is 8970089. The reversal of 8970081 is 1800798.

8970081 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8970081 - 211 = 8968033 is a prime.

It is a super-2 number, since 2×89700812 = 160924706293122, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

8970081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8970089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495011 + ... + 1495016.

It is an arithmetic number, because the mean of its divisors is an integer number (2990028).

Almost surely, 28970081 is an apocalyptic number.

It is an amenable number.

8970081 is a deficient number, since it is larger than the sum of its proper divisors (2990031).

8970081 is a wasteful number, since it uses less digits than its factorization.

8970081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990030.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 8970081 is about 2995.0093489003. The cubic root of 8970081 is about 207.7776300172. Note that the first 3 decimals are identical.

The spelling of 8970081 in words is "eight million, nine hundred seventy thousand, eighty-one".

Divisors: 1 3 2990027 8970081