Search a number
-
+
30146141 = 1912291291
BaseRepresentation
bin111001011111…
…1111001011101
32002201120201202
41302333321131
530204134031
62554045245
7514144424
oct162777135
962646652
1030146141
1116020273
12a119825
13632666c
14400a2bb
1529a72cb
hex1cbfe5d

30146141 has 8 divisors (see below), whose sum is σ = 31783200. Its totient is φ = 28514160.

The previous prime is 30146131. The next prime is 30146147. The reversal of 30146141 is 14164103.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30146141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30146147) 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, 22706 + ... + 23996.

It is an arithmetic number, because the mean of its divisors is an integer number (3972900).

Almost surely, 230146141 is an apocalyptic number.

It is an amenable number.

30146141 is a deficient number, since it is larger than the sum of its proper divisors (1637059).

30146141 is a wasteful number, since it uses less digits than its factorization.

30146141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30146141 is about 5490.5501545838. The cubic root of 30146141 is about 311.2269824863.

The spelling of 30146141 in words is "thirty million, one hundred forty-six thousand, one hundred forty-one".

Divisors: 1 19 1229 1291 23351 24529 1586639 30146141