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13372381 = 111737027
BaseRepresentation
bin110011000000…
…101111011101
3221011101110101
4303000233131
511410404011
61154341101
7221443351
oct63005735
927141411
1013372381
117603960
12458a791
132a02869
141ac1461
1512922c1
hexcc0bdd

13372381 has 8 divisors (see below), whose sum is σ = 14674464. Its totient is φ = 12084720.

The previous prime is 13372363. The next prime is 13372427. The reversal of 13372381 is 18327331.

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

It is a cyclic number.

It is not a de Polignac number, because 13372381 - 219 = 12848093 is a prime.

It is a super-2 number, since 2×133723812 = 357641147218322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13372301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611 + ... + 5416.

It is an arithmetic number, because the mean of its divisors is an integer number (1834308).

Almost surely, 213372381 is an apocalyptic number.

13372381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13372381 is a deficient number, since it is larger than the sum of its proper divisors (1302083).

13372381 is a wasteful number, since it uses less digits than its factorization.

13372381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211.

The product of its digits is 3024, while the sum is 28.

The square root of 13372381 is about 3656.8266297433. The cubic root of 13372381 is about 237.3574753370.

The spelling of 13372381 in words is "thirteen million, three hundred seventy-two thousand, three hundred eighty-one".

Divisors: 1 11 173 1903 7027 77297 1215671 13372381