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7828901 = 23340387
BaseRepresentation
bin11101110111010110100101
3112201202020022
4131313112211
54001011101
6435444525
7123354533
oct35672645
915652208
107828901
114467a73
122756745
1318115b2
14107b153
15a49a1b
hex7775a5

7828901 has 4 divisors (see below), whose sum is σ = 8169312. Its totient is φ = 7488492.

The previous prime is 7828879. The next prime is 7828913. The reversal of 7828901 is 1098287.

It is a happy number.

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 7828901 - 210 = 7827877 is a prime.

It is a super-2 number, since 2×78289012 = 122583381735602, 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 (7828921) 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, 170171 + ... + 170216.

It is an arithmetic number, because the mean of its divisors is an integer number (2042328).

Almost surely, 27828901 is an apocalyptic number.

It is an amenable number.

7828901 is a deficient number, since it is larger than the sum of its proper divisors (340411).

7828901 is a wasteful number, since it uses less digits than its factorization.

7828901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340410.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 7828901 is about 2798.0173337562. The cubic root of 7828901 is about 198.5638875879.

The spelling of 7828901 in words is "seven million, eight hundred twenty-eight thousand, nine hundred one".

Divisors: 1 23 340387 7828901