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13428007 = 103130369
BaseRepresentation
bin110011001110…
…010100100111
3221021012202121
4303032110213
511414144012
61155450411
7222064465
oct63162447
927235677
1013428007
11764172a
1245b6a07
132a21c88
141ad7835
1512a3a07
hexcce527

13428007 has 4 divisors (see below), whose sum is σ = 13558480. Its totient is φ = 13297536.

The previous prime is 13427983. The next prime is 13428049. The reversal of 13428007 is 70082431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70082431 = 193688549.

It is a cyclic number.

It is not a de Polignac number, because 13428007 - 211 = 13425959 is a prime.

It is a super-2 number, since 2×134280072 = 360622743984098, 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 (13428097) 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 3 ways as a sum of consecutive naturals, for example, 65082 + ... + 65287.

It is an arithmetic number, because the mean of its divisors is an integer number (3389620).

Almost surely, 213428007 is an apocalyptic number.

13428007 is a deficient number, since it is larger than the sum of its proper divisors (130473).

13428007 is a wasteful number, since it uses less digits than its factorization.

13428007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130472.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 13428007 is about 3664.4245114342. The cubic root of 13428007 is about 237.6861373664.

The spelling of 13428007 in words is "thirteen million, four hundred twenty-eight thousand, seven".

Divisors: 1 103 130369 13428007