Search a number
-
+
18001030 = 251800103
BaseRepresentation
bin100010010101…
…0110010000110
31020212112202211
41010222302012
514102013110
61441454034
7306002065
oct104526206
936775684
1018001030
11a185493
12604131a
1339635c8
1425681dc
1518a898a
hex112ac86

18001030 has 8 divisors (see below), whose sum is σ = 32401872. Its totient is φ = 7200408.

The previous prime is 18000989. The next prime is 18001031. The reversal of 18001030 is 3010081.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18001030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18001031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900042 + ... + 900061.

It is an arithmetic number, because the mean of its divisors is an integer number (4050234).

Almost surely, 218001030 is an apocalyptic number.

18001030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18001030 is a deficient number, since it is larger than the sum of its proper divisors (14400842).

18001030 is a wasteful number, since it uses less digits than its factorization.

18001030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800110.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 18001030 is about 4242.7620720469. The cubic root of 18001030 is about 262.0791381471.

The spelling of 18001030 in words is "eighteen million, one thousand, thirty".

Divisors: 1 2 5 10 1800103 3600206 9000515 18001030