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28822950 = 23252132379
BaseRepresentation
bin110110111110…
…0110110100110
32000020100122200
41231330312212
524334313300
62505435330
7466663632
oct155746646
960210580
1028822950
11152a7122
12979bb46
135c82300
143b83dc2
1527e5200
hex1b7cda6

28822950 has 108 divisors (see below), whose sum is σ = 84073860. Its totient is φ = 7076160.

The previous prime is 28822949. The next prime is 28822951. The reversal of 28822950 is 5922882.

It is an interprime number because it is at equal distance from previous prime (28822949) and next prime (28822951).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28822951) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 75861 + ... + 76239.

Almost surely, 228822950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28822950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42036930).

28822950 is an abundant number, since it is smaller than the sum of its proper divisors (55250910).

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

28822950 is a wasteful number, since it uses less digits than its factorization.

28822950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28822950 is about 5368.7009601951. The cubic root of 28822950 is about 306.6051717169.

It can be divided in two parts, 2882 and 2950, that added together give a cube (5832 = 183).

The spelling of 28822950 in words is "twenty-eight million, eight hundred twenty-two thousand, nine hundred fifty".

Divisors: 1 2 3 5 6 9 10 13 15 18 25 26 30 39 45 50 65 75 78 90 117 130 150 169 195 225 234 325 338 379 390 450 507 585 650 758 845 975 1014 1137 1170 1521 1690 1895 1950 2274 2535 2925 3042 3411 3790 4225 4927 5070 5685 5850 6822 7605 8450 9475 9854 11370 12675 14781 15210 17055 18950 24635 25350 28425 29562 34110 38025 44343 49270 56850 64051 73905 76050 85275 88686 123175 128102 147810 170550 192153 221715 246350 320255 369525 384306 443430 576459 640510 739050 960765 1108575 1152918 1601275 1921530 2217150 2882295 3202550 4803825 5764590 9607650 14411475 28822950