Search a number
-
+
49807131 = 3111509307
BaseRepresentation
bin1011110111111…
…1111100011011
310110201110112120
42331333330123
5100222312011
64535312323
71143232203
oct275777433
9113643476
1049807131
1126129920
121481b6a3
13a41b69a
146887403
15458ca06
hex2f7ff1b

49807131 has 8 divisors (see below), whose sum is σ = 72446784. Its totient is φ = 30186120.

The previous prime is 49807099. The next prime is 49807133. The reversal of 49807131 is 13170894.

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

It is not a de Polignac number, because 49807131 - 25 = 49807099 is a prime.

It is a super-2 number, since 2×498071312 = 4961500596902322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1509307 = 49807131 / (4 + 9 + 8 + 0 + 7 + 1 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 49807092 and 49807101.

It is not an unprimeable number, because it can be changed into a prime (49807133) 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, 754621 + ... + 754686.

It is an arithmetic number, because the mean of its divisors is an integer number (9055848).

Almost surely, 249807131 is an apocalyptic number.

49807131 is a deficient number, since it is larger than the sum of its proper divisors (22639653).

49807131 is a wasteful number, since it uses less digits than its factorization.

49807131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509321.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 49807131 is about 7057.4167370221. The cubic root of 49807131 is about 367.9288491735.

The spelling of 49807131 in words is "forty-nine million, eight hundred seven thousand, one hundred thirty-one".

Divisors: 1 3 11 33 1509307 4527921 16602377 49807131