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22380190 = 257378641
BaseRepresentation
bin101010101011…
…1111010011110
31120010000211221
41111113322132
521212131230
62115403554
7361141240
oct125277236
946100757
1022380190
11116a6628
1275b35ba
134837921
142d88090
151e7127a
hex1557e9e

22380190 has 32 divisors (see below), whose sum is σ = 47289024. Its totient is φ = 7464960.

The previous prime is 22380181. The next prime is 22380217. The reversal of 22380190 is 9108322.

It is a super-2 number, since 2×223801902 = 1001745808872200, which contains 22 as substring.

It is a congruent 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, 1731 + ... + 6910.

It is an arithmetic number, because the mean of its divisors is an integer number (1477782).

Almost surely, 222380190 is an apocalyptic number.

22380190 is an abundant number, since it is smaller than the sum of its proper divisors (24908834).

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

22380190 is a wasteful number, since it uses less digits than its factorization.

22380190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8692.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 22380190 is about 4730.7705503438. The cubic root of 22380190 is about 281.8088253760.

The spelling of 22380190 in words is "twenty-two million, three hundred eighty thousand, one hundred ninety".

Divisors: 1 2 5 7 10 14 35 37 70 74 185 259 370 518 1295 2590 8641 17282 43205 60487 86410 120974 302435 319717 604870 639434 1598585 2238019 3197170 4476038 11190095 22380190