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28488192 = 293171091
BaseRepresentation
bin110110010101…
…1001000000000
31222121100110020
41230223020000
524243110232
62454333440
7464100645
oct154531000
958540406
1028488192
1115098667
12965a280
135b95b25
143ad7dcc
15277ae2c
hex1b2b200

28488192 has 80 divisors (see below), whose sum is σ = 80432352. Its totient is φ = 8929280.

The previous prime is 28488167. The next prime is 28488197. The reversal of 28488192 is 29188482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488197) 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, 25567 + ... + 26657.

Almost surely, 228488192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28488192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40216176).

28488192 is an abundant number, since it is smaller than the sum of its proper divisors (51944160).

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

28488192 is a wasteful number, since it uses less digits than its factorization.

28488192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1113 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 28488192 is about 5337.4330909155. The cubic root of 28488192 is about 305.4135463422.

It can be divided in two parts, 28488 and 192, that added together give a triangular number (28680 = T239).

The spelling of 28488192 in words is "twenty-eight million, four hundred eighty-eight thousand, one hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 16 17 24 32 34 48 51 64 68 96 102 128 136 192 204 256 272 384 408 512 544 768 816 1088 1091 1536 1632 2176 2182 3264 3273 4352 4364 6528 6546 8704 8728 13056 13092 17456 18547 26112 26184 34912 37094 52368 55641 69824 74188 104736 111282 139648 148376 209472 222564 279296 296752 418944 445128 558592 593504 837888 890256 1187008 1675776 1780512 2374016 3561024 4748032 7122048 9496064 14244096 28488192