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30284590 = 257432637
BaseRepresentation
bin111001110000…
…1101100101110
32002222121122111
41303201230232
530223101330
63001034234
7515262160
oct163415456
962877574
1030284590
1116105296
12a18597a
13637469b
144044930
1529d332a
hex1ce1b2e

30284590 has 16 divisors (see below), whose sum is σ = 62299872. Its totient is φ = 10383264.

The previous prime is 30284567. The next prime is 30284593. The reversal of 30284590 is 9548203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30284593) 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, 216249 + ... + 216388.

It is an arithmetic number, because the mean of its divisors is an integer number (3893742).

Almost surely, 230284590 is an apocalyptic number.

30284590 is an abundant number, since it is smaller than the sum of its proper divisors (32015282).

30284590 is a wasteful number, since it uses less digits than its factorization.

30284590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432651.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 30284590 is about 5503.1436470439. The cubic root of 30284590 is about 311.7027014045.

The spelling of 30284590 in words is "thirty million, two hundred eighty-four thousand, five hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 432637 865274 2163185 3028459 4326370 6056918 15142295 30284590