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28368252 = 22331123879
BaseRepresentation
bin110110000110…
…1110101111100
31222101020221000
41230031311330
524230241002
62452010300
7463061163
oct154156574
958336830
1028368252
1115016540
129600990
135b53363
143aa63da
15275561c
hex1b0dd7c

28368252 has 48 divisors (see below), whose sum is σ = 80236800. Its totient is φ = 8596080.

The previous prime is 28368251. The next prime is 28368253. The reversal of 28368252 is 25286382.

It is an interprime number because it is at equal distance from previous prime (28368251) and next prime (28368253).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28368251) 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, 10752 + ... + 13127.

It is an arithmetic number, because the mean of its divisors is an integer number (1671600).

Almost surely, 228368252 is an apocalyptic number.

28368252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28368252 is an abundant number, since it is smaller than the sum of its proper divisors (51868548).

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

28368252 is a wasteful number, since it uses less digits than its factorization.

28368252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23903 (or 23895 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28368252 is about 5326.1855018390. The cubic root of 28368252 is about 304.9843295720.

The spelling of 28368252 in words is "twenty-eight million, three hundred sixty-eight thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 9 11 12 18 22 27 33 36 44 54 66 99 108 132 198 297 396 594 1188 23879 47758 71637 95516 143274 214911 262669 286548 429822 525338 644733 788007 859644 1050676 1289466 1576014 2364021 2578932 3152028 4728042 7092063 9456084 14184126 28368252