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30222984 = 23311239479
BaseRepresentation
bin111001101001…
…0101010001000
32002212111010210
41303102222020
530214113414
62555441120
7514614441
oct163225210
962774123
1030222984
1116072a80
12a1561a0
13635262c
14402a2c8
1529bee59
hex1cd2a88

30222984 has 64 divisors (see below), whose sum is σ = 82944000. Its totient is φ = 9101120.

The previous prime is 30222979. The next prime is 30223001. The reversal of 30222984 is 48922203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62857 + ... + 63335.

It is an arithmetic number, because the mean of its divisors is an integer number (1296000).

Almost surely, 230222984 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 30222984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41472000).

30222984 is an abundant number, since it is smaller than the sum of its proper divisors (52721016).

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

30222984 is a wasteful number, since it uses less digits than its factorization.

30222984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30222984 is about 5497.5434513972. The cubic root of 30222984 is about 311.4911989832.

It can be divided in two parts, 3022 and 2984, that added together give a palindrome (6006).

The spelling of 30222984 in words is "thirty million, two hundred twenty-two thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 239 264 478 479 717 956 958 1434 1437 1912 1916 2629 2868 2874 3832 5258 5269 5736 5748 7887 10516 10538 11496 15774 15807 21032 21076 31548 31614 42152 63096 63228 114481 126456 228962 343443 457924 686886 915848 1259291 1373772 2518582 2747544 3777873 5037164 7555746 10074328 15111492 30222984