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122680448 = 27112892
BaseRepresentation
bin1110100111111…
…11010010000000
322112211210221022
413103333102000
5222401233243
620101245012
73016523642
oct723772200
9275753838
10122680448
1163282700
1235103768
131c554ca7
1412416892
15ab84b68
hex74ff480

122680448 has 72 divisors (see below), whose sum is σ = 271693065. Its totient is φ = 55137280.

The previous prime is 122680447. The next prime is 122680457. The reversal of 122680448 is 844086221.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 109662784 + 13017664 = 10472^2 + 3608^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=7832.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122680447) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1378388 + ... + 1378476.

Almost surely, 2122680448 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 122680448

122680448 is an abundant number, since it is smaller than the sum of its proper divisors (149012617).

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

122680448 is an frugal number, since it uses more digits than its factorization.

122680448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 122680448 is about 11076.1206205061. The cubic root of 122680448 is about 496.8879342809.

The spelling of 122680448 in words is "one hundred twenty-two million, six hundred eighty thousand, four hundred forty-eight".

Divisors: 1 2 4 8 11 16 22 32 44 64 88 89 121 128 176 178 242 352 356 484 704 712 968 979 1408 1424 1936 1958 2848 3872 3916 5696 7744 7832 7921 10769 11392 15488 15664 15842 21538 31328 31684 43076 62656 63368 86152 87131 125312 126736 172304 174262 253472 344608 348524 506944 689216 697048 958441 1013888 1378432 1394096 1916882 2788192 3833764 5576384 7667528 11152768 15335056 30670112 61340224 122680448