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28935500 = 2253115261
BaseRepresentation
bin110111001100…
…0010101001100
32000110002001012
41232120111030
524401414000
62512104352
7500643026
oct156302514
960402035
1028935500
1115373740
1298350b8
135cc15c9
143bb3016
152818735
hex1b9854c

28935500 has 48 divisors (see below), whose sum is σ = 68953248. Its totient is φ = 10520000.

The previous prime is 28935469. The next prime is 28935539. The reversal of 28935500 is 553982.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2870 + ... + 8130.

It is an arithmetic number, because the mean of its divisors is an integer number (1436526).

Almost surely, 228935500 is an apocalyptic number.

28935500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28935500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34476624).

28935500 is an abundant number, since it is smaller than the sum of its proper divisors (40017748).

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

28935500 is a wasteful number, since it uses less digits than its factorization.

28935500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291 (or 5279 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 28935500 is about 5379.1727988604. The cubic root of 28935500 is about 307.0037382788.

The spelling of 28935500 in words is "twenty-eight million, nine hundred thirty-five thousand, five hundred".

Divisors: 1 2 4 5 10 11 20 22 25 44 50 55 100 110 125 220 250 275 500 550 1100 1375 2750 5261 5500 10522 21044 26305 52610 57871 105220 115742 131525 231484 263050 289355 526100 578710 657625 1157420 1315250 1446775 2630500 2893550 5787100 7233875 14467750 28935500