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7960813 = 74724197
BaseRepresentation
bin11110010111100011101101
3112222110011221
4132113203231
54014221223
6442343341
7124444240
oct36274355
915873157
107960813
114548093
1227bab51
131859653
1410b3257
15a73b5d
hex7978ed

7960813 has 8 divisors (see below), whose sum is σ = 9292032. Its totient is φ = 6678096.

The previous prime is 7960801. The next prime is 7960837. The reversal of 7960813 is 3180697.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-7960813 is a prime.

It is a Duffinian number.

7960813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7960853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11770 + ... + 12427.

It is an arithmetic number, because the mean of its divisors is an integer number (1161504).

Almost surely, 27960813 is an apocalyptic number.

It is an amenable number.

7960813 is a deficient number, since it is larger than the sum of its proper divisors (1331219).

7960813 is a wasteful number, since it uses less digits than its factorization.

7960813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24251.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 7960813 is about 2821.4912723594. The cubic root of 7960813 is about 199.6729070092.

The spelling of 7960813 in words is "seven million, nine hundred sixty thousand, eight hundred thirteen".

Divisors: 1 7 47 329 24197 169379 1137259 7960813