Search a number
-
+
7139190 = 235237973
BaseRepresentation
bin11011001110111101110110
3111102201010110
4123032331312
53311423230
6413003450
7114452652
oct33167566
914381113
107139190
114036863
122483586
13162c696
14d3ba62
159604b0
hex6cef76

7139190 has 16 divisors (see below), whose sum is σ = 17134128. Its totient is φ = 1903776.

The previous prime is 7139189. The next prime is 7139219. The reversal of 7139190 is 919317.

It is a super-2 number, since 2×71391902 = 101936067712200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 237973 = 7139190 / (7 + 1 + 3 + 9 + 1 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118957 + ... + 119016.

It is an arithmetic number, because the mean of its divisors is an integer number (1070883).

Almost surely, 27139190 is an apocalyptic number.

7139190 is an abundant number, since it is smaller than the sum of its proper divisors (9994938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7139190 is a wasteful number, since it uses less digits than its factorization.

7139190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237983.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 7139190 is about 2671.9262714379. The cubic root of 7139190 is about 192.5527150845.

The spelling of 7139190 in words is "seven million, one hundred thirty-nine thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 237973 475946 713919 1189865 1427838 2379730 3569595 7139190