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1022231020 = 225711395179
BaseRepresentation
bin111100111011100…
…000000111101100
32122020111201100011
4330323200013230
54043142343040
6245233543004
734221551236
oct7473400754
92566451304
101022231020
11485028328
12246414a64
13133a21c35
1499a97256
155eb233ea
hex3cee01ec

1022231020 has 48 divisors (see below), whose sum is σ = 2193004800. Its totient is φ = 400155840.

The previous prime is 1022231009. The next prime is 1022231033. The reversal of 1022231020 is 201322201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194791 + ... + 199969.

It is an arithmetic number, because the mean of its divisors is an integer number (45687600).

Almost surely, 21022231020 is an apocalyptic number.

1022231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022231020 is an abundant number, since it is smaller than the sum of its proper divisors (1170773780).

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

1022231020 is a wasteful number, since it uses less digits than its factorization.

1022231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398 (or 5396 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1022231020 is about 31972.3477398830. The cubic root of 1022231020 is about 1007.3560951790.

Adding to 1022231020 its reverse (201322201), we get a palindrome (1223553221).

The spelling of 1022231020 in words is "one billion, twenty-two million, two hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 71 139 142 278 284 355 556 695 710 1390 1420 2780 5179 9869 10358 19738 20716 25895 39476 49345 51790 98690 103580 197380 367709 719881 735418 1439762 1470836 1838545 2879524 3599405 3677090 7198810 7354180 14397620 51111551 102223102 204446204 255557755 511115510 1022231020