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13297970 = 257271701
BaseRepresentation
bin110010101110…
…100100110010
3221000121101102
4302232210302
511401013340
61153004402
7221013410
oct62564462
927017342
1013297970
117562a64
124553702
1329a7a2a
141aa22b0
15127a215
hexcae932

13297970 has 32 divisors (see below), whose sum is σ = 27495936. Its totient is φ = 4536000.

The previous prime is 13297969. The next prime is 13297987. The reversal of 13297970 is 7979231.

13297970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×132979702 = 353672012241800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18620 + ... + 19320.

It is an arithmetic number, because the mean of its divisors is an integer number (859248).

Almost surely, 213297970 is an apocalyptic number.

13297970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13297970 is an abundant number, since it is smaller than the sum of its proper divisors (14197966).

13297970 is a wasteful number, since it uses less digits than its factorization.

13297970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 13297970 is about 3646.6381778290. The cubic root of 13297970 is about 236.9163953479.

The spelling of 13297970 in words is "thirteen million, two hundred ninety-seven thousand, nine hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 271 542 701 1355 1402 1897 2710 3505 3794 4907 7010 9485 9814 18970 24535 49070 189971 379942 949855 1329797 1899710 2659594 6648985 13297970