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13020874 = 28378439
BaseRepresentation
bin110001101010…
…111011001010
3220111112021121
4301222323022
511313131444
61143025454
7215450506
oct61527312
926445247
1013020874
117393859
12443b28a
13290b879
141a2d306
151223084
hexc6aeca

13020874 has 8 divisors (see below), whose sum is σ = 19766880. Its totient is φ = 6431916.

The previous prime is 13020857. The next prime is 13020883. The reversal of 13020874 is 47802031.

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

It is an unprimeable number.

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, 39054 + ... + 39385.

It is an arithmetic number, because the mean of its divisors is an integer number (2470860).

Almost surely, 213020874 is an apocalyptic number.

13020874 is a deficient number, since it is larger than the sum of its proper divisors (6746006).

13020874 is an equidigital number, since it uses as much as digits as its factorization.

13020874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78524.

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

The square root of 13020874 is about 3608.4448173694. Note that the first 3 decimals coincide. The cubic root of 13020874 is about 235.2592521403.

The spelling of 13020874 in words is "thirteen million, twenty thousand, eight hundred seventy-four".

Divisors: 1 2 83 166 78439 156878 6510437 13020874