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122400768 = 212371423
BaseRepresentation
bin1110100101110…
…11000000000000
322112022121021210
413102323000000
5222313311033
620051250120
73014250360
oct722730000
9275277253
10122400768
1163101566
1234ba9940
131c4878b9
14123829a0
15ab2bd63
hex74bb000

122400768 has 104 divisors (see below), whose sum is σ = 373247488. Its totient is φ = 34947072.

The previous prime is 122400763. The next prime is 122400791. The reversal of 122400768 is 867004221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122400763) 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, 85305 + ... + 86727.

Almost surely, 2122400768 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 122400768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186623744).

122400768 is an abundant number, since it is smaller than the sum of its proper divisors (250846720).

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

122400768 is an equidigital number, since it uses as much as digits as its factorization.

122400768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1435 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 122400768 is about 11063.4880575703. The cubic root of 122400768 is about 496.5100545705.

Adding to 122400768 its reverse (867004221), we get a palindrome (989404989).

The spelling of 122400768 in words is "one hundred twenty-two million, four hundred thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 512 672 768 896 1024 1344 1423 1536 1792 2048 2688 2846 3072 3584 4096 4269 5376 5692 6144 7168 8538 9961 10752 11384 12288 14336 17076 19922 21504 22768 28672 29883 34152 39844 43008 45536 59766 68304 79688 86016 91072 119532 136608 159376 182144 239064 273216 318752 364288 478128 546432 637504 728576 956256 1092864 1275008 1457152 1912512 2185728 2550016 2914304 3825024 4371456 5100032 5828608 7650048 8742912 10200064 15300096 17485824 20400128 30600192 40800256 61200384 122400768