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145160197 = 7213317351
BaseRepresentation
bin10001010011011…
…11100000000101
3101010010220100121
420221233200011
5244130111242
622223141541
73411561400
oct1051574005
9333126317
10145160197
1174a37006
12407448b1
13240c6010
14153c8d37
15cb25667
hex8a6f805

145160197 has 24 divisors (see below), whose sum is σ = 187740672. Its totient is φ = 111132000.

The previous prime is 145160173. The next prime is 145160203. The reversal of 145160197 is 791061541.

It is not a de Polignac number, because 145160197 - 27 = 145160069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145160117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16072 + ... + 23422.

It is an arithmetic number, because the mean of its divisors is an integer number (7822528).

Almost surely, 2145160197 is an apocalyptic number.

It is an amenable number.

145160197 is a deficient number, since it is larger than the sum of its proper divisors (42580475).

145160197 is a wasteful number, since it uses less digits than its factorization.

145160197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409 (or 7402 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 145160197 is about 12048.2445609309. The cubic root of 145160197 is about 525.5521893799.

The spelling of 145160197 in words is "one hundred forty-five million, one hundred sixty thousand, one hundred ninety-seven".

Divisors: 1 7 13 31 49 91 217 403 637 1519 2821 7351 19747 51457 95563 227881 360199 668941 1595167 2962453 4682587 11166169 20737171 145160197