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672050145 = 35137148541
BaseRepresentation
bin101000000011101…
…010101111100001
31201211120200111010
4220003222233201
52334021101040
6150404211133
722440221604
oct5003525741
91654520433
10672050145
1131539a248
12169099aa9
13a9304610
146538033b
153e000e80
hex280eabe1

672050145 has 32 divisors (see below), whose sum is σ = 1174328064. Its totient is φ = 326188800.

The previous prime is 672050131. The next prime is 672050149. The reversal of 672050145 is 541050276.

It is not a de Polignac number, because 672050145 - 26 = 672050081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672050149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10426 + ... + 38115.

It is an arithmetic number, because the mean of its divisors is an integer number (36697752).

Almost surely, 2672050145 is an apocalyptic number.

672050145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

672050145 is a deficient number, since it is larger than the sum of its proper divisors (502277919).

672050145 is a wasteful number, since it uses less digits than its factorization.

672050145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48633.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 672050145 is about 25923.9299682745. The cubic root of 672050145 is about 875.9256142400.

It can be divided in two parts, 6720 and 50145, that added together give a palindrome (56865).

The spelling of 672050145 in words is "six hundred seventy-two million, fifty thousand, one hundred forty-five".

Divisors: 1 3 5 13 15 39 65 71 195 213 355 923 1065 2769 4615 13845 48541 145623 242705 631033 728115 1893099 3155165 3446411 9465495 10339233 17232055 44803343 51696165 134410029 224016715 672050145