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102453440 = 2651272521
BaseRepresentation
bin1100001101101…
…01000011000000
321010210011200212
412012311003000
5202212002230
614055533252
72352561035
oct606650300
9233704625
10102453440
1152917871
122a38a228
13182c244b
14d86d38c
158edb895
hex61b50c0

102453440 has 56 divisors (see below), whose sum is σ = 245985792. Its totient is φ = 40642560.

The previous prime is 102453427. The next prime is 102453451. The reversal of 102453440 is 44354201.

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, 39380 + ... + 41900.

Almost surely, 2102453440 is an apocalyptic number.

102453440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122992896).

102453440 is an abundant number, since it is smaller than the sum of its proper divisors (143532352).

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

102453440 is a wasteful number, since it uses less digits than its factorization.

102453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 102453440 is about 10121.9286699719. The cubic root of 102453440 is about 467.9242091209.

The spelling of 102453440 in words is "one hundred two million, four hundred fifty-three thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 127 160 254 320 508 635 1016 1270 2032 2521 2540 4064 5042 5080 8128 10084 10160 12605 20168 20320 25210 40336 40640 50420 80672 100840 161344 201680 320167 403360 640334 806720 1280668 1600835 2561336 3201670 5122672 6403340 10245344 12806680 20490688 25613360 51226720 102453440