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145220332460 = 22574572269777
BaseRepresentation
bin1000011100111111001…
…1100110101110101100
3111212211122200020121212
42013033303212232230
54334402401114320
6150414023413552
713330460313320
oct2071763465654
9455748606555
10145220332460
1156651101195
1224189bb42b8
1310904276708
147058a85980
153b9e19b9c5
hex21cfce6bac

145220332460 has 48 divisors (see below), whose sum is σ = 349291596864. Its totient is φ = 49680857088.

The previous prime is 145220332403. The next prime is 145220332463. The reversal of 145220332460 is 64233022541.

It is not an unprimeable number, because it can be changed into a prime (145220332463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070909 + ... + 1198868.

It is an arithmetic number, because the mean of its divisors is an integer number (7276908268).

Almost surely, 2145220332460 is an apocalyptic number.

145220332460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145220332460 is an abundant number, since it is smaller than the sum of its proper divisors (204071264404).

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

145220332460 is a wasteful number, since it uses less digits than its factorization.

145220332460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270250 (or 2270248 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 145220332460 in words is "one hundred forty-five billion, two hundred twenty million, three hundred thirty-two thousand, four hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 457 914 1828 2285 3199 4570 6398 9140 12796 15995 31990 63980 2269777 4539554 9079108 11348885 15888439 22697770 31776878 45395540 63553756 79442195 158884390 317768780 1037288089 2074576178 4149152356 5186440445 7261016623 10372880890 14522033246 20745761780 29044066492 36305083115 72610166230 145220332460