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18275030 = 252417583
BaseRepresentation
bin100010110110…
…1101011010110
31021101110121222
41011231223112
514134300110
61451410342
7311222654
oct105555326
937343558
1018275030
11a352334
1261539b2
133a2b237
1425d9dd4
15190ec55
hex116dad6

18275030 has 16 divisors (see below), whose sum is σ = 33035904. Its totient is φ = 7278720.

The previous prime is 18275029. The next prime is 18275069. The reversal of 18275030 is 3057281.

It is a congruent number.

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, 1382 + ... + 6201.

It is an arithmetic number, because the mean of its divisors is an integer number (2064744).

Almost surely, 218275030 is an apocalyptic number.

18275030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18275030 is a deficient number, since it is larger than the sum of its proper divisors (14760874).

18275030 is a wasteful number, since it uses less digits than its factorization.

18275030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7831.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 18275030 is about 4274.9304087903. The cubic root of 18275030 is about 263.4021807203.

The spelling of 18275030 in words is "eighteen million, two hundred seventy-five thousand, thirty".

Divisors: 1 2 5 10 241 482 1205 2410 7583 15166 37915 75830 1827503 3655006 9137515 18275030