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2487977141 = 13229835733
BaseRepresentation
bin1001010001001011…
…1000010010110101
320102101120100000112
42110102320102311
520043410232031
61050513552405
7115440312446
oct22422702265
96371510015
102487977141
111067442061
12595275705
133085acc30
141986012cd
15e865362b
hex944b84b5

2487977141 has 8 divisors (see below), whose sum is σ = 2691063480. Its totient is φ = 2286562752.

The previous prime is 2487977131. The next prime is 2487977143. The reversal of 2487977141 is 1417797842.

It can be written as a sum of positive squares in 4 ways, for example, as 376942225 + 2111034916 = 19415^2 + 45946^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2487977141 - 226 = 2420868277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2487977141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2487977143) 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, 414890 + ... + 420843.

It is an arithmetic number, because the mean of its divisors is an integer number (336382935).

Almost surely, 22487977141 is an apocalyptic number.

It is an amenable number.

2487977141 is a deficient number, since it is larger than the sum of its proper divisors (203086339).

2487977141 is a wasteful number, since it uses less digits than its factorization.

2487977141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835975.

The product of its digits is 790272, while the sum is 50.

The square root of 2487977141 is about 49879.6265122344. The cubic root of 2487977141 is about 1355.0296405602.

The spelling of 2487977141 in words is "two billion, four hundred eighty-seven million, nine hundred seventy-seven thousand, one hundred forty-one".

Divisors: 1 13 229 2977 835733 10864529 191382857 2487977141