Search a number
-
+
122223680 = 265381949
BaseRepresentation
bin1110100100011…
…11110001000000
322111222121100222
413102033301000
5222242124210
620043402212
73012612155
oct722176100
9274877328
10122223680
1162aa0507
1234b23368
131c425107
141233822c
15aae4655
hex748fc40

122223680 has 28 divisors (see below), whose sum is σ = 291045900. Its totient is φ = 48889344.

The previous prime is 122223643. The next prime is 122223701. The reversal of 122223680 is 86322221.

It can be written as a sum of positive squares in 2 ways, for example, as 96983104 + 25240576 = 9848^2 + 5024^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190655 + ... + 191294.

Almost surely, 2122223680 is an apocalyptic number.

122223680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122223680 is an abundant number, since it is smaller than the sum of its proper divisors (168822220).

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

122223680 is an equidigital number, since it uses as much as digits as its factorization.

122223680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381966 (or 381956 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 122223680 is about 11055.4818981354. The cubic root of 122223680 is about 496.2704906868.

The spelling of 122223680 in words is "one hundred twenty-two million, two hundred twenty-three thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 381949 763898 1527796 1909745 3055592 3819490 6111184 7638980 12222368 15277960 24444736 30555920 61111840 122223680