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4840681 = 31156151
BaseRepresentation
bin10010011101110011101001
3100002221011111
4102131303221
52214400211
6251430321
756100526
oct22356351
910087144
104840681
11280696a
1217553a1
131006411
1490014d
15659421
hex49dce9

4840681 has 4 divisors (see below), whose sum is σ = 4996864. Its totient is φ = 4684500.

The previous prime is 4840679. The next prime is 4840711. The reversal of 4840681 is 1860484.

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 4840681 - 21 = 4840679 is a prime.

It is a super-2 number, since 2×48406812 = 46864385087522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 156151 = 4840681 / (4 + 8 + 4 + 0 + 6 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4840601) 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 3 ways as a sum of consecutive naturals, for example, 78045 + ... + 78106.

It is an arithmetic number, because the mean of its divisors is an integer number (1249216).

Almost surely, 24840681 is an apocalyptic number.

4840681 is the 1392-nd centered pentagonal number.

It is an amenable number.

4840681 is a deficient number, since it is larger than the sum of its proper divisors (156183).

4840681 is a wasteful number, since it uses less digits than its factorization.

4840681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156182.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 4840681 is about 2200.1547672834. The cubic root of 4840681 is about 169.1617442438.

The spelling of 4840681 in words is "four million, eight hundred forty thousand, six hundred eighty-one".

Divisors: 1 31 156151 4840681