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30284488 = 2313733989
BaseRepresentation
bin111001110000…
…1101011001000
32002222121111201
41303201223020
530223100423
63001033544
7515261653
oct163415310
962877451
1030284488
1116105203
12a1858b4
136374620
14404489a
1529d32ad
hex1ce1ac8

30284488 has 32 divisors (see below), whose sum is σ = 62004600. Its totient is φ = 13782528.

The previous prime is 30284477. The next prime is 30284509. The reversal of 30284488 is 88448203.

It can be written as a sum of positive squares in 4 ways, for example, as 21511044 + 8773444 = 4638^2 + 2962^2 .

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, 5598 + ... + 9586.

Almost surely, 230284488 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 30284488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31002300).

30284488 is an abundant number, since it is smaller than the sum of its proper divisors (31720112).

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

30284488 is a wasteful number, since it uses less digits than its factorization.

30284488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081 (or 4077 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 30284488 is about 5503.1343796059. The cubic root of 30284488 is about 311.7023514607.

The spelling of 30284488 in words is "thirty million, two hundred eighty-four thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 13 26 52 73 104 146 292 584 949 1898 3796 3989 7592 7978 15956 31912 51857 103714 207428 291197 414856 582394 1164788 2329576 3785561 7571122 15142244 30284488