[go: up one dir, main page]

Search a number
-
+
1807894 = 211372221
BaseRepresentation
bin110111001011000010110
310101211222001
412321120112
5430323034
6102425514
721236554
oct6713026
93354861
101807894
111025330
1273229a
134b3b7a
14350bd4
1525aa14
hex1b9616

1807894 has 16 divisors (see below), whose sum is σ = 3039696. Its totient is φ = 799200.

The previous prime is 1807891. The next prime is 1807903. The reversal of 1807894 is 4987081.

1807894 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1807891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297 + ... + 1924.

It is an arithmetic number, because the mean of its divisors is an integer number (189981).

21807894 is an apocalyptic number.

1807894 is a deficient number, since it is larger than the sum of its proper divisors (1231802).

1807894 is a wasteful number, since it uses less digits than its factorization.

1807894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1807894 is about 1344.5794881672. The cubic root of 1807894 is about 121.8216061534.

It can be divided in two parts, 1807 and 894, that added together give a triangular number (2701 = T73).

The spelling of 1807894 in words is "one million, eight hundred seven thousand, eight hundred ninety-four".

Divisors: 1 2 11 22 37 74 407 814 2221 4442 24431 48862 82177 164354 903947 1807894