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823068972 = 2233113122349
BaseRepresentation
bin110001000011110…
…000100100101100
32010100202020101000
4301003300210230
53141201201342
6213401120300
726252653665
oct6103604454
92110666330
10823068972
113926679a0
121ab789090
1310169c17b
147b45236c
154c3d244c
hex310f092c

823068972 has 96 divisors (see below), whose sum is σ = 2403072000. Its totient is φ = 241358400.

The previous prime is 823068943. The next prime is 823069001. The reversal of 823068972 is 279860328.

It is an interprime number because it is at equal distance from previous prime (823068943) and next prime (823069001).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25654 + ... + 48002.

It is an arithmetic number, because the mean of its divisors is an integer number (25032000).

Almost surely, 2823068972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 823068972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201536000).

823068972 is an abundant number, since it is smaller than the sum of its proper divisors (1580003028).

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

823068972 is a wasteful number, since it uses less digits than its factorization.

823068972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22404 (or 22396 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 823068972 is about 28689.1786567688. The cubic root of 823068972 is about 937.1564027257.

The spelling of 823068972 in words is "eight hundred twenty-three million, sixty-eight thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 9 11 12 18 22 27 31 33 36 44 54 62 66 93 99 108 124 132 186 198 279 297 341 372 396 558 594 682 837 1023 1116 1188 1364 1674 2046 3069 3348 4092 6138 9207 12276 18414 22349 36828 44698 67047 89396 134094 201141 245839 268188 402282 491678 603423 692819 737517 804564 983356 1206846 1385638 1475034 2078457 2212551 2413692 2771276 2950068 4156914 4425102 6235371 6637653 7621009 8313828 8850204 12470742 13275306 15242018 18706113 22863027 24941484 26550612 30484036 37412226 45726054 68589081 74824452 91452108 137178162 205767243 274356324 411534486 823068972