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28014552 = 2333235639
BaseRepresentation
bin110101011011…
…1011111011000
31221201021202000
41222313133120
524132431202
62440241000
7460056036
oct152673730
957637660
1028014552
11148a4825
129470160
135a5b377
143a13556
1526d591c
hex1ab77d8

28014552 has 64 divisors (see below), whose sum is σ = 81216000. Its totient is φ = 8930592.

The previous prime is 28014523. The next prime is 28014559. The reversal of 28014552 is 25541082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28014559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2149 + ... + 7787.

It is an arithmetic number, because the mean of its divisors is an integer number (1269000).

Almost surely, 228014552 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 28014552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40608000).

28014552 is an abundant number, since it is smaller than the sum of its proper divisors (53201448).

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

28014552 is a wasteful number, since it uses less digits than its factorization.

28014552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5677 (or 5667 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 28014552 is about 5292.8774782721. The cubic root of 28014552 is about 303.7114933659.

The spelling of 28014552 in words is "twenty-eight million, fourteen thousand, five hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 18 23 24 27 36 46 54 69 72 92 108 138 184 207 216 276 414 552 621 828 1242 1656 2484 4968 5639 11278 16917 22556 33834 45112 50751 67668 101502 129697 135336 152253 203004 259394 304506 389091 406008 518788 609012 778182 1037576 1167273 1218024 1556364 2334546 3112728 3501819 4669092 7003638 9338184 14007276 28014552