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672248841 = 31179257863
BaseRepresentation
bin101000000100011…
…011010000001001
31201211221210001020
4220010123100021
52334043430331
6150412343053
722442010105
oct5004332011
91654853036
10672248841
11315515560
12169174a89
13a9373ba4
14653d2905
153e03ec96
hex2811b409

672248841 has 16 divisors (see below), whose sum is σ = 990197760. Its totient is φ = 402264720.

The previous prime is 672248839. The next prime is 672248869. The reversal of 672248841 is 148842276.

It is not a de Polignac number, because 672248841 - 21 = 672248839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672248793 and 672248802.

It is not an unprimeable number, because it can be changed into a prime (672248821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126325 + ... + 131538.

It is an arithmetic number, because the mean of its divisors is an integer number (61887360).

Almost surely, 2672248841 is an apocalyptic number.

It is an amenable number.

672248841 is a deficient number, since it is larger than the sum of its proper divisors (317948919).

672248841 is a wasteful number, since it uses less digits than its factorization.

672248841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257956.

The product of its digits is 172032, while the sum is 42.

The square root of 672248841 is about 25927.7619743780. The cubic root of 672248841 is about 876.0119301038.

The spelling of 672248841 in words is "six hundred seventy-two million, two hundred forty-eight thousand, eight hundred forty-one".

Divisors: 1 3 11 33 79 237 869 2607 257863 773589 2836493 8509479 20371177 61113531 224082947 672248841