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972028140 = 223516200469
BaseRepresentation
bin111001111011111…
…111100011101100
32111202001010221020
4321323333203230
53442314400030
6240241534140
733042050166
oct7173774354
92452033836
10972028140
11459759146
12231644350
131264c53a5
1493149936
155a508510
hex39eff8ec

972028140 has 24 divisors (see below), whose sum is σ = 2721678960. Its totient is φ = 259207488.

The previous prime is 972028117. The next prime is 972028151. The reversal of 972028140 is 41820279.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8100175 + ... + 8100294.

It is an arithmetic number, because the mean of its divisors is an integer number (113403290).

Almost surely, 2972028140 is an apocalyptic number.

It is an amenable number.

972028140 is an abundant number, since it is smaller than the sum of its proper divisors (1749650820).

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

972028140 is a wasteful number, since it uses less digits than its factorization.

972028140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16200481 (or 16200479 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 972028140 is about 31177.3658284339. The cubic root of 972028140 is about 990.5877338593.

The spelling of 972028140 in words is "nine hundred seventy-two million, twenty-eight thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 16200469 32400938 48601407 64801876 81002345 97202814 162004690 194405628 243007035 324009380 486014070 972028140