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145790269 = 311547857
BaseRepresentation
bin10001011000010…
…01010100111101
3101011022220122121
420230021110331
5244310242034
622244442541
73420124342
oct1054112475
9334286577
10145790269
1175327429
12409a9451
1324286a41
14155107c9
15cbec1b4
hex8b0953d

145790269 has 8 divisors (see below), whose sum is σ = 146697408. Its totient is φ = 144886560.

The previous prime is 145790263. The next prime is 145790291. The reversal of 145790269 is 962097541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145790269 - 25 = 145790237 is a prime.

It is a super-2 number, since 2×1457902692 = 42509605070184722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145790263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169689 + ... + 170545.

It is an arithmetic number, because the mean of its divisors is an integer number (18337176).

Almost surely, 2145790269 is an apocalyptic number.

It is an amenable number.

145790269 is a deficient number, since it is larger than the sum of its proper divisors (907139).

145790269 is an equidigital number, since it uses as much as digits as its factorization.

145790269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 145790269 is about 12074.3641240440. The cubic root of 145790269 is about 526.3114833106.

The spelling of 145790269 in words is "one hundred forty-five million, seven hundred ninety thousand, two hundred sixty-nine".

Divisors: 1 311 547 857 170117 266527 468779 145790269