Search a number
-
+
1630468 = 22758231
BaseRepresentation
bin110001110000100000100
310001211120201
412032010010
5404133333
654540244
716600360
oct6160404
93054521
101630468
11a13aa4
12667684
13451198
143062a0
1522317d
hex18e104

1630468 has 12 divisors (see below), whose sum is σ = 3260992. Its totient is φ = 698760.

The previous prime is 1630463. The next prime is 1630471. The reversal of 1630468 is 8640361.

1630468 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 58231 = 1630468 / (1 + 6 + 3 + 0 + 4 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29088 + ... + 29143.

21630468 is an apocalyptic number.

It is an amenable number.

1630468 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1630468 is a wasteful number, since it uses less digits than its factorization.

1630468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58242 (or 58240 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1630468 is about 1276.8978032717. The cubic root of 1630468 is about 117.6984544263.

The spelling of 1630468 in words is "one million, six hundred thirty thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 28 58231 116462 232924 407617 815234 1630468