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22285020 = 2235371417
BaseRepresentation
bin101010100000…
…0101011011100
31112221012022010
41111000223130
521201110040
62113351220
7360263622
oct125005334
945835263
1022285020
111164107a
127568510
134803504
142d61512
151e52e80
hex1540adc

22285020 has 24 divisors (see below), whose sum is σ = 62398224. Its totient is φ = 5942656.

The previous prime is 22285009. The next prime is 22285061. The reversal of 22285020 is 2058222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185649 + ... + 185768.

It is an arithmetic number, because the mean of its divisors is an integer number (2599926).

Almost surely, 222285020 is an apocalyptic number.

22285020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22285020 is an abundant number, since it is smaller than the sum of its proper divisors (40113204).

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

22285020 is a wasteful number, since it uses less digits than its factorization.

22285020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371429 (or 371427 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 22285020 is about 4720.7012190987. The cubic root of 22285020 is about 281.4088011840.

The spelling of 22285020 in words is "twenty-two million, two hundred eighty-five thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 371417 742834 1114251 1485668 1857085 2228502 3714170 4457004 5571255 7428340 11142510 22285020