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2269988 = 22781071
BaseRepresentation
bin1000101010001100100100
311021022211122
420222030210
51040114423
6120353112
725203020
oct10521444
94238748
102269988
111310526
12915798
136162b6
14431380
152ec8c8
hex22a324

2269988 has 12 divisors (see below), whose sum is σ = 4540032. Its totient is φ = 972840.

The previous prime is 2269973. The next prime is 2269991. The reversal of 2269988 is 8899622.

2269988 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40508 + ... + 40563.

It is an arithmetic number, because the mean of its divisors is an integer number (378336).

22269988 is an apocalyptic number.

2269988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2269988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2269988 is a wasteful number, since it uses less digits than its factorization.

2269988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81082 (or 81080 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 2269988 is about 1506.6479349868. The cubic root of 2269988 is about 131.4239513634.

The spelling of 2269988 in words is "two million, two hundred sixty-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 4 7 14 28 81071 162142 324284 567497 1134994 2269988