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30470553 = 331128539
BaseRepresentation
bin111010000111…
…1000110011001
32010100001202000
41310033012121
530300024203
63005031213
7516665301
oct164170631
963301660
1030470553
1116221a83
12a255509
13640b219
144092601
152a1d4a3
hex1d0f199

30470553 has 8 divisors (see below), whose sum is σ = 45141600. Its totient is φ = 20313684.

The previous prime is 30470549. The next prime is 30470569. The reversal of 30470553 is 35507403.

It is a happy number.

It is not a de Polignac number, because 30470553 - 22 = 30470549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1128539 = 30470553 / (3 + 0 + 4 + 7 + 0 + 5 + 5 + 3).

It is not an unprimeable number, because it can be changed into a prime (30470533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564243 + ... + 564296.

It is an arithmetic number, because the mean of its divisors is an integer number (5642700).

Almost surely, 230470553 is an apocalyptic number.

It is an amenable number.

30470553 is a deficient number, since it is larger than the sum of its proper divisors (14671047).

30470553 is a wasteful number, since it uses less digits than its factorization.

30470553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128548 (or 1128542 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 30470553 is about 5520.0138586783. The cubic root of 30470553 is about 312.3394050571.

Adding to 30470553 its reverse (35507403), we get a palindrome (65977956).

The spelling of 30470553 in words is "thirty million, four hundred seventy thousand, five hundred fifty-three".

Divisors: 1 3 9 27 1128539 3385617 10156851 30470553