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4387420 = 225219371
BaseRepresentation
bin10000101111001001011100
322020220102001
4100233021130
52110344140
6234012044
752202212
oct20571134
98226361
104387420
112527374
121577024
13ba800b
14822cb2
155b9e9a
hex42f25c

4387420 has 12 divisors (see below), whose sum is σ = 9213624. Its totient is φ = 1754960.

The previous prime is 4387391. The next prime is 4387429. The reversal of 4387420 is 247834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4387429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109666 + ... + 109705.

It is an arithmetic number, because the mean of its divisors is an integer number (767802).

Almost surely, 24387420 is an apocalyptic number.

It is an amenable number.

4387420 is an abundant number, since it is smaller than the sum of its proper divisors (4826204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4387420 is a wasteful number, since it uses less digits than its factorization.

4387420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219380 (or 219378 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 4387420 is about 2094.6169100817. The cubic root of 4387420 is about 163.7079374511.

It can be divided in two parts, 4 and 387420, that multiplied together give a triangular number (1549680 = T1760).

The spelling of 4387420 in words is "four million, three hundred eighty-seven thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 219371 438742 877484 1096855 2193710 4387420