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4020754487 = 6760011261
BaseRepresentation
bin1110111110100111…
…1101100000110111
3101101012202111020212
43233221331200313
531213303120422
61502550420035
7201431564201
oct35751754067
911335674225
104020754487
11178367a3a2
1294266161b
134c100a389
142a1dd7771
15187ec49e2
hexefa7d837

4020754487 has 4 divisors (see below), whose sum is σ = 4080765816. Its totient is φ = 3960743160.

The previous prime is 4020754433. The next prime is 4020754523. The reversal of 4020754487 is 7844570204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4020754487 - 210 = 4020753463 is a prime.

It is a super-3 number, since 3×40207544873 (a number of 30 digits) contains 333 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 (4020754187) 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, 30005564 + ... + 30005697.

It is an arithmetic number, because the mean of its divisors is an integer number (1020191454).

Almost surely, 24020754487 is an apocalyptic number.

4020754487 is a deficient number, since it is larger than the sum of its proper divisors (60011329).

4020754487 is an equidigital number, since it uses as much as digits as its factorization.

4020754487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60011328.

The product of its (nonzero) digits is 250880, while the sum is 41.

The square root of 4020754487 is about 63409.4195447333. The cubic root of 4020754487 is about 1590.1417917404.

The spelling of 4020754487 in words is "four billion, twenty million, seven hundred fifty-four thousand, four hundred eighty-seven".

Divisors: 1 67 60011261 4020754487