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28898492 = 2274392351
BaseRepresentation
bin110111000111…
…1010010111100
32000101012021112
41232033102330
524344222432
62511221152
7500430110
oct156172274
960335245
1028898492
1115348957
1298177b8
135caa7cc
143ba3740
15280c7b2
hex1b8f4bc

28898492 has 24 divisors (see below), whose sum is σ = 57953280. Its totient is φ = 12351600.

The previous prime is 28898489. The next prime is 28898497. The reversal of 28898492 is 29489882.

28898492 is nontrivially palindromic in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 28898492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28898497) 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, 11117 + ... + 13467.

It is an arithmetic number, because the mean of its divisors is an integer number (2414720).

Almost surely, 228898492 is an apocalyptic number.

It is an amenable number.

28898492 is an abundant number, since it is smaller than the sum of its proper divisors (29054788).

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

28898492 is a wasteful number, since it uses less digits than its factorization.

28898492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801 (or 2799 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 28898492 is about 5375.7317641415. The cubic root of 28898492 is about 306.8727982968.

The spelling of 28898492 in words is "twenty-eight million, eight hundred ninety-eight thousand, four hundred ninety-two".

Divisors: 1 2 4 7 14 28 439 878 1756 2351 3073 4702 6146 9404 12292 16457 32914 65828 1032089 2064178 4128356 7224623 14449246 28898492