Search a number
-
+
1868070 = 23573853
BaseRepresentation
bin111001000000100100110
310111220111210
413020010212
5434234240
6104012250
721610161
oct7100446
93456453
101868070
111066566
12761086
13505389
14368ad8
1526d780
hex1c8126

1868070 has 32 divisors (see below), whose sum is σ = 4550112. Its totient is φ = 490752.

The previous prime is 1868063. The next prime is 1868107. The reversal of 1868070 is 708681.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1764 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (142191).

21868070 is an apocalyptic number.

1868070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2275056).

1868070 is an abundant number, since it is smaller than the sum of its proper divisors (2682042).

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

1868070 is a wasteful number, since it uses less digits than its factorization.

1868070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1868070 is about 1366.7735730544. The cubic root of 1868070 is about 123.1584975037.

It can be divided in two parts, 186 and 8070, that added together give a triangular number (8256 = T128).

The spelling of 1868070 in words is "one million, eight hundred sixty-eight thousand, seventy".

Divisors: 1 2 3 5 6 10 15 30 73 146 219 365 438 730 853 1095 1706 2190 2559 4265 5118 8530 12795 25590 62269 124538 186807 311345 373614 622690 934035 1868070