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30488276 = 22713217379
BaseRepresentation
bin111010001001…
…1011011010100
32010100222001102
41310103123110
530301111101
63005245232
7520101050
oct164233324
963328042
1030488276
1116234325
12a263818
136416300
144098c60
152a2386b
hex1d136d4

30488276 has 72 divisors (see below), whose sum is σ = 70096320. Its totient is φ = 11321856.

The previous prime is 30488243. The next prime is 30488279. The reversal of 30488276 is 67288403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30488279) 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 23 ways as a sum of consecutive naturals, for example, 80255 + ... + 80633.

It is an arithmetic number, because the mean of its divisors is an integer number (973560).

Almost surely, 230488276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30488276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35048160).

30488276 is an abundant number, since it is smaller than the sum of its proper divisors (39608044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30488276 is a wasteful number, since it uses less digits than its factorization.

30488276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 30488276 is about 5521.6189654847. The cubic root of 30488276 is about 312.3999500514.

The spelling of 30488276 in words is "thirty million, four hundred eighty-eight thousand, two hundred seventy-six".

Divisors: 1 2 4 7 13 14 17 26 28 34 52 68 91 119 169 182 221 238 338 364 379 442 476 676 758 884 1183 1516 1547 2366 2653 2873 3094 4732 4927 5306 5746 6188 6443 9854 10612 11492 12886 19708 20111 25772 34489 40222 45101 64051 68978 80444 83759 90202 128102 137956 167518 180404 256204 335036 448357 586313 896714 1088867 1172626 1793428 2177734 2345252 4355468 7622069 15244138 30488276