Search a number
-
+
30255141 = 375924419
BaseRepresentation
bin111001101101…
…0100000100101
32002221010020210
41303122200211
530221131031
63000250033
7515110260
oct163324045
962833223
1030255141
1116095154
12a170919
136364167
144037cd7
1529c9746
hex1cda825

30255141 has 16 divisors (see below), whose sum is σ = 46886400. Its totient is φ = 16994928.

The previous prime is 30255139. The next prime is 30255151. The reversal of 30255141 is 14155203.

It is not a de Polignac number, because 30255141 - 21 = 30255139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30255131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10971 + ... + 13448.

It is an arithmetic number, because the mean of its divisors is an integer number (2930400).

Almost surely, 230255141 is an apocalyptic number.

It is an amenable number.

30255141 is a deficient number, since it is larger than the sum of its proper divisors (16631259).

30255141 is a wasteful number, since it uses less digits than its factorization.

30255141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24488.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 30255141 is about 5500.4673437809. The cubic root of 30255141 is about 311.6016344943.

The spelling of 30255141 in words is "thirty million, two hundred fifty-five thousand, one hundred forty-one".

Divisors: 1 3 7 21 59 177 413 1239 24419 73257 170933 512799 1440721 4322163 10085047 30255141