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8790013 = 71123803
BaseRepresentation
bin100001100001…
…111111111101
3121112120122001
4201201333331
54222240023
6512222301
7134466601
oct41417775
917476561
108790013
114a64081
122b3a991
131a89bbb
14124b501
15b896ad
hex861ffd

8790013 has 4 divisors (see below), whose sum is σ = 8913888. Its totient is φ = 8666140.

The previous prime is 8790007. The next prime is 8790077. The reversal of 8790013 is 3100978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8790013 - 25 = 8789981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8790083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61831 + ... + 61972.

It is an arithmetic number, because the mean of its divisors is an integer number (2228472).

Almost surely, 28790013 is an apocalyptic number.

It is an amenable number.

8790013 is a deficient number, since it is larger than the sum of its proper divisors (123875).

8790013 is a wasteful number, since it uses less digits than its factorization.

8790013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123874.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 8790013 is about 2964.7956084695. The cubic root of 8790013 is about 206.3778921521.

It can be divided in two parts, 87 and 90013, that added together give a triangular number (90100 = T424).

The spelling of 8790013 in words is "eight million, seven hundred ninety thousand, thirteen".

Divisors: 1 71 123803 8790013