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298280028 = 223171462157
BaseRepresentation
bin10001110001110…
…110010001011100
3202210021012021110
4101301312101130
51102324430103
645333102020
710251224034
oct2161662134
9683235243
10298280028
1114340a222
1283a87910
1349a47c77
142b8868c4
151b2be403
hex11c7645c

298280028 has 24 divisors (see below), whose sum is σ = 736927632. Its totient is φ = 93577984.

The previous prime is 298280027. The next prime is 298280039. The reversal of 298280028 is 820082892.

298280028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298280027) 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, 730875 + ... + 731282.

It is an arithmetic number, because the mean of its divisors is an integer number (30705318).

Almost surely, 2298280028 is an apocalyptic number.

It is an amenable number.

298280028 is an abundant number, since it is smaller than the sum of its proper divisors (438647604).

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

298280028 is a wasteful number, since it uses less digits than its factorization.

298280028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462181 (or 1462179 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 298280028 is about 17270.7853903637. The cubic root of 298280028 is about 668.1511574217.

The spelling of 298280028 in words is "two hundred ninety-eight million, two hundred eighty thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 1462157 2924314 4386471 5848628 8772942 17545884 24856669 49713338 74570007 99426676 149140014 298280028