Search a number
-
+
70145018 = 271493979
BaseRepresentation
bin1000010111001…
…01001111111010
311212222201212122
410023211033322
5120424120033
610543241242
71511136266
oct413451772
9155881778
1070145018
113665aa99
121b5a9222
13116bc838
14945d0a6
156258a98
hex42e53fa

70145018 has 8 divisors (see below), whose sum is σ = 106699680. Its totient is φ = 34578460.

The previous prime is 70144981. The next prime is 70145029. The reversal of 70145018 is 81054107.

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

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246848 + ... + 247131.

It is an arithmetic number, because the mean of its divisors is an integer number (13337460).

Almost surely, 270145018 is an apocalyptic number.

70145018 is a deficient number, since it is larger than the sum of its proper divisors (36554662).

70145018 is a wasteful number, since it uses less digits than its factorization.

70145018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494052.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 70145018 is about 8375.2622645503. The cubic root of 70145018 is about 412.4129339353.

The spelling of 70145018 in words is "seventy million, one hundred forty-five thousand, eighteen".

Divisors: 1 2 71 142 493979 987958 35072509 70145018