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18070970 = 251807097
BaseRepresentation
bin100010011101…
…1110110111010
31021000002201012
41010323312322
514111232340
61443153522
7306413021
oct104736672
937002635
1018070970
11a222a95
1260758a2
1339893a8
1425858b8
1518be565
hex113bdba

18070970 has 8 divisors (see below), whose sum is σ = 32527764. Its totient is φ = 7228384.

The previous prime is 18070967. The next prime is 18070979. The reversal of 18070970 is 7907081.

It can be written as a sum of positive squares in 2 ways, for example, as 17280649 + 790321 = 4157^2 + 889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18070979) 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, 903539 + ... + 903558.

Almost surely, 218070970 is an apocalyptic number.

18070970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18070970 is a deficient number, since it is larger than the sum of its proper divisors (14456794).

18070970 is a wasteful number, since it uses less digits than its factorization.

18070970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807104.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 18070970 is about 4250.9963537975. The cubic root of 18070970 is about 262.4181210995.

The spelling of 18070970 in words is "eighteen million, seventy thousand, nine hundred seventy".

Divisors: 1 2 5 10 1807097 3614194 9035485 18070970