Search a number
-
+
48978407 = 67853857
BaseRepresentation
bin1011101011010…
…1100111100111
310102011100202002
42322311213213
5100014302112
64505435515
71133211122
oct272654747
9112140662
1048978407
1125713225
121449bb9b
13a1bb40a
14670d3b9
1544771c2
hex2eb59e7

48978407 has 8 divisors (see below), whose sum is σ = 49825776. Its totient is φ = 48134592.

The previous prime is 48978389. The next prime is 48978443. The reversal of 48978407 is 70487984.

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 48978407 - 220 = 47929831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48978487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56723 + ... + 57579.

It is an arithmetic number, because the mean of its divisors is an integer number (6228222).

Almost surely, 248978407 is an apocalyptic number.

48978407 is a deficient number, since it is larger than the sum of its proper divisors (847369).

48978407 is an equidigital number, since it uses as much as digits as its factorization.

48978407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 48978407 is about 6998.4574729007. The cubic root of 48978407 is about 365.8768111399.

The spelling of 48978407 in words is "forty-eight million, nine hundred seventy-eight thousand, four hundred seven".

Divisors: 1 67 853 857 57151 57419 731021 48978407