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228130984 = 2331919883
BaseRepresentation
bin11011001100100…
…00000010101000
3120220021020212201
431212100002220
5431400142414
634345345544
75440036624
oct1546200250
9526236781
10228130984
11107857204
12644982b4
1338356663
1422426184
1515064574
hexd9900a8

228130984 has 16 divisors (see below), whose sum is σ = 441544320. Its totient is φ = 110385840.

The previous prime is 228130979. The next prime is 228131009. The reversal of 228130984 is 489031822.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459694 + ... + 460189.

It is an arithmetic number, because the mean of its divisors is an integer number (27596520).

Almost surely, 2228130984 is an apocalyptic number.

It is an amenable number.

228130984 is a deficient number, since it is larger than the sum of its proper divisors (213413336).

228130984 is a wasteful number, since it uses less digits than its factorization.

228130984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919920 (or 919916 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 228130984 is about 15104.0055614397. The cubic root of 228130984 is about 611.0284397944.

The spelling of 228130984 in words is "two hundred twenty-eight million, one hundred thirty thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 31 62 124 248 919883 1839766 3679532 7359064 28516373 57032746 114065492 228130984