Search a number
-
+
18070541 = 173728729
BaseRepresentation
bin100010011101…
…1110000001101
31021000002010022
41010323300031
514111224131
61443151525
7306411536
oct104736015
937002108
1018070541
11a222735
1260755a5
133989138
14258568d
1518be37b
hex113bc0d

18070541 has 8 divisors (see below), whose sum is σ = 19651320. Its totient is φ = 16547328.

The previous prime is 18070529. The next prime is 18070553. The reversal of 18070541 is 14507081.

It is an interprime number because it is at equal distance from previous prime (18070529) and next prime (18070553).

It can be written as a sum of positive squares in 4 ways, for example, as 7540516 + 10530025 = 2746^2 + 3245^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 18070541 - 26 = 18070477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18070541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18070561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13736 + ... + 14993.

It is an arithmetic number, because the mean of its divisors is an integer number (2456415).

Almost surely, 218070541 is an apocalyptic number.

It is an amenable number.

18070541 is a deficient number, since it is larger than the sum of its proper divisors (1580779).

18070541 is a wasteful number, since it uses less digits than its factorization.

18070541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28783.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 18070541 is about 4250.9458947392. The cubic root of 18070541 is about 262.4160445043.

The spelling of 18070541 in words is "eighteen million, seventy thousand, five hundred forty-one".

Divisors: 1 17 37 629 28729 488393 1062973 18070541