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1345988 = 22753907
BaseRepresentation
bin101001000100111000100
32112101100102
411020213010
5321032423
644503232
714304110
oct5104704
92471312
101345988
1183a296
1254ab18
13381857
14270740
151b8c28
hex1489c4

1345988 has 24 divisors (see below), whose sum is σ = 2745792. Its totient is φ = 565344.

The previous prime is 1345987. The next prime is 1345997. The reversal of 1345988 is 8895431.

It is a super-2 number, since 2×13459882 = 3623367392288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1345987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (114408).

21345988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1345988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372896).

1345988 is an abundant number, since it is smaller than the sum of its proper divisors (1399804).

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

1345988 is a wasteful number, since it uses less digits than its factorization.

1345988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 969 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 1345988 is about 1160.1672293252. The cubic root of 1345988 is about 110.4113523648.

The spelling of 1345988 in words is "one million, three hundred forty-five thousand, nine hundred eighty-eight".

Divisors: 1 2 4 7 14 28 53 106 212 371 742 907 1484 1814 3628 6349 12698 25396 48071 96142 192284 336497 672994 1345988