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145995213 = 37132311327
BaseRepresentation
bin10001011001110…
…11010111001101
3101011201022210010
420230323113031
5244333321323
622253103433
73421640010
oct1054732715
9334638703
10145995213
1175457401
1240a87b79
1324329100
1415565377
15cc3cc93
hex8b3b5cd

145995213 has 48 divisors (see below), whose sum is σ = 248856576. Its totient is φ = 74468160.

The previous prime is 145995203. The next prime is 145995233. The reversal of 145995213 is 312599541.

It is not a de Polignac number, because 145995213 - 25 = 145995181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145995203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109356 + ... + 110682.

It is an arithmetic number, because the mean of its divisors is an integer number (5184512).

Almost surely, 2145995213 is an apocalyptic number.

145995213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145995213 is a deficient number, since it is larger than the sum of its proper divisors (102861363).

145995213 is a wasteful number, since it uses less digits than its factorization.

145995213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1381 counting only the distinct ones).

The product of its digits is 48600, while the sum is 39.

The square root of 145995213 is about 12082.8478845014. The cubic root of 145995213 is about 526.5579878213.

The spelling of 145995213 in words is "one hundred forty-five million, nine hundred ninety-five thousand, two hundred thirteen".

Divisors: 1 3 7 13 21 31 39 91 93 169 217 273 403 507 651 1183 1209 1327 2821 3549 3981 5239 8463 9289 15717 17251 27867 36673 41137 51753 110019 120757 123411 224263 287959 362271 534781 672789 863877 1569841 1604343 3743467 4709523 6952153 11230401 20856459 48665071 145995213