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45072860 = 2257321949
BaseRepresentation
bin1010101111110…
…0000111011100
310010210221100012
42223330013130
543014312420
64250022352
71055053520
oct253740734
9103727305
1045072860
11234959a8
12131179b8
139451841
145db3d80
153e54dc5
hex2afc1dc

45072860 has 24 divisors (see below), whose sum is σ = 108175200. Its totient is φ = 15453504.

The previous prime is 45072851. The next prime is 45072869. The reversal of 45072860 is 6827054.

It is an interprime number because it is at equal distance from previous prime (45072851) and next prime (45072869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45072869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160835 + ... + 161114.

It is an arithmetic number, because the mean of its divisors is an integer number (4507300).

Almost surely, 245072860 is an apocalyptic number.

It is an amenable number.

45072860 is an abundant number, since it is smaller than the sum of its proper divisors (63102340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45072860 is a wasteful number, since it uses less digits than its factorization.

45072860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321965 (or 321963 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 45072860 is about 6713.6323998265. The cubic root of 45072860 is about 355.8811937859.

The spelling of 45072860 in words is "forty-five million, seventy-two thousand, eight hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 321949 643898 1287796 1609745 2253643 3219490 4507286 6438980 9014572 11268215 22536430 45072860