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145990080 = 2633561277
BaseRepresentation
bin10001011001110…
…10000111000000
3101011201001202000
420230322013000
5244333140310
622253024000
73421616025
oct1054720700
9334631660
10145990080
1175453565
1240a85000
1324326982
141556354c
15cc3b4c0
hex8b3a1c0

145990080 has 224 divisors, whose sum is σ = 525353280. Its totient is φ = 38154240.

The previous prime is 145990069. The next prime is 145990081. The reversal of 145990080 is 80099541.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145990081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526902 + ... + 527178.

Almost surely, 2145990080 is an apocalyptic number.

145990080 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 145990080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262676640).

145990080 is an abundant number, since it is smaller than the sum of its proper divisors (379363200).

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

145990080 is a wasteful number, since it uses less digits than its factorization.

145990080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 145990080 is about 12082.6354741008. The cubic root of 145990080 is about 526.5518167198.

The spelling of 145990080 in words is "one hundred forty-five million, nine hundred ninety thousand, eighty".