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13013493 = 313731663
BaseRepresentation
bin110001101001…
…000111110101
3220111011011020
4301221013311
511312412433
61142531353
7215420133
oct61510765
926434136
1013013493
117389259
124436b59
1329083bc
141a2a753
151220cb3
hexc691f5

13013493 has 8 divisors (see below), whose sum is σ = 17478528. Its totient is φ = 8612064.

The previous prime is 13013467. The next prime is 13013509. The reversal of 13013493 is 39431031.

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

It is not a de Polignac number, because 13013493 - 213 = 13005301 is a prime.

It is a super-2 number, since 2×130134932 = 338702000122098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013443) 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, 15421 + ... + 16242.

It is an arithmetic number, because the mean of its divisors is an integer number (2184816).

Almost surely, 213013493 is an apocalyptic number.

It is an amenable number.

13013493 is a deficient number, since it is larger than the sum of its proper divisors (4465035).

13013493 is a wasteful number, since it uses less digits than its factorization.

13013493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31803.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 13013493 is about 3607.4219326272. The cubic root of 13013493 is about 235.2147907944.

The spelling of 13013493 in words is "thirteen million, thirteen thousand, four hundred ninety-three".

Divisors: 1 3 137 411 31663 94989 4337831 13013493