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30404230 = 256149843
BaseRepresentation
bin111001111111…
…0111010000110
32010012200202121
41303332322012
530240413410
63003400154
7516301033
oct163767206
963180677
1030404230
111618716a
12a22305a
1363b6c8c
14407638a
152a089da
hex1cfee86

30404230 has 16 divisors (see below), whose sum is σ = 55625904. Its totient is φ = 11962080.

The previous prime is 30404203. The next prime is 30404239. The reversal of 30404230 is 3240403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30404239) 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, 24312 + ... + 25531.

It is an arithmetic number, because the mean of its divisors is an integer number (3476619).

Almost surely, 230404230 is an apocalyptic number.

30404230 is a deficient number, since it is larger than the sum of its proper divisors (25221674).

30404230 is a wasteful number, since it uses less digits than its factorization.

30404230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49911.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 30404230 is about 5514.0030830604. The cubic root of 30404230 is about 312.1126250752.

Adding to 30404230 its reverse (3240403), we get a palindrome (33644633).

The spelling of 30404230 in words is "thirty million, four hundred four thousand, two hundred thirty".

Divisors: 1 2 5 10 61 122 305 610 49843 99686 249215 498430 3040423 6080846 15202115 30404230