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1222088 = 237139157
BaseRepresentation
bin100101010010111001000
32022002101112
410222113020
5303101323
642105452
713246640
oct4522710
92262345
101222088
1176519a
124ab288
1333a33a
1423b520
15192178
hex12a5c8

1222088 has 32 divisors (see below), whose sum is σ = 2654400. Its totient is φ = 516672.

The previous prime is 1222063. The next prime is 1222097. The reversal of 1222088 is 8802221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7706 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (82950).

21222088 is an apocalyptic number.

It is an amenable number.

1222088 is an abundant number, since it is smaller than the sum of its proper divisors (1432312).

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

1222088 is a wasteful number, since it uses less digits than its factorization.

1222088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 1222088 is about 1105.4808908344. The cubic root of 1222088 is about 106.9138970167.

The spelling of 1222088 in words is "one million, two hundred twenty-two thousand, eighty-eight".

Divisors: 1 2 4 7 8 14 28 56 139 157 278 314 556 628 973 1099 1112 1256 1946 2198 3892 4396 7784 8792 21823 43646 87292 152761 174584 305522 611044 1222088