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30540145 = 518473307
BaseRepresentation
bin111010010000…
…0000101110001
32010110121012111
41310200011301
530304241040
63010325321
7520405216
oct164400561
963417174
1030540145
111626a299
12a289841
136433abc
1440adb0d
152a33dea
hex1d20171

30540145 has 8 divisors (see below), whose sum is σ = 36679104. Its totient is φ = 24411504.

The previous prime is 30540131. The next prime is 30540151. The reversal of 30540145 is 54104503.

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 30540145 - 27 = 30540017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7582 + ... + 10888.

It is an arithmetic number, because the mean of its divisors is an integer number (4584888).

Almost surely, 230540145 is an apocalyptic number.

It is an amenable number.

30540145 is a deficient number, since it is larger than the sum of its proper divisors (6138959).

30540145 is a wasteful number, since it uses less digits than its factorization.

30540145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5159.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 30540145 is about 5526.3138709270. The cubic root of 30540145 is about 312.5770092877.

Adding to 30540145 its reverse (54104503), we get a palindrome (84644648).

The spelling of 30540145 in words is "thirty million, five hundred forty thousand, one hundred forty-five".

Divisors: 1 5 1847 3307 9235 16535 6108029 30540145