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145032980 = 22543168643
BaseRepresentation
bin10001010010100…
…00011100010100
3101002220102211212
420221100130110
5244112023410
622220320552
73410521451
oct1051203424
9332812755
10145032980
117495a474
12406a3158
1324080141
1415394828
15caecb05
hex8a50714

145032980 has 24 divisors (see below), whose sum is σ = 311654112. Its totient is φ = 56663712.

The previous prime is 145032977. The next prime is 145032997. The reversal of 145032980 is 89230541.

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, 83462 + ... + 85181.

It is an arithmetic number, because the mean of its divisors is an integer number (12985588).

Almost surely, 2145032980 is an apocalyptic number.

145032980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145032980 is an abundant number, since it is smaller than the sum of its proper divisors (166621132).

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

145032980 is a wasteful number, since it uses less digits than its factorization.

145032980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168695 (or 168693 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 145032980 is about 12042.9639208959. The cubic root of 145032980 is about 525.3986148800.

The spelling of 145032980 in words is "one hundred forty-five million, thirty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 168643 337286 674572 843215 1686430 3372860 7251649 14503298 29006596 36258245 72516490 145032980