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145814711 = 720830673
BaseRepresentation
bin10001011000011…
…11010010110111
3101011101011011212
420230033102313
5244312032321
622245152035
73420255530
oct1054172267
9334334155
10145814711
1175343829
12409bb61b
1324294bc3
1415519687
15cc0455b
hex8b0f4b7

145814711 has 4 divisors (see below), whose sum is σ = 166645392. Its totient is φ = 124984032.

The previous prime is 145814707. The next prime is 145814723. The reversal of 145814711 is 117418541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 117418541 = 176906973.

It is a cyclic number.

It is not a de Polignac number, because 145814711 - 22 = 145814707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145814771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10415330 + ... + 10415343.

It is an arithmetic number, because the mean of its divisors is an integer number (41661348).

Almost surely, 2145814711 is an apocalyptic number.

145814711 is a deficient number, since it is larger than the sum of its proper divisors (20830681).

145814711 is an equidigital number, since it uses as much as digits as its factorization.

145814711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20830680.

The product of its digits is 4480, while the sum is 32.

The square root of 145814711 is about 12075.3762260229. The cubic root of 145814711 is about 526.3408940217.

The spelling of 145814711 in words is "one hundred forty-five million, eight hundred fourteen thousand, seven hundred eleven".

Divisors: 1 7 20830673 145814711