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122480 = 2451531
BaseRepresentation
bin11101111001110000
320020000022
4131321300
512404410
62343012
71020041
oct357160
9206008
10122480
1184026
125aa68
1343997
14328c8
1526455
hex1de70

122480 has 20 divisors (see below), whose sum is σ = 284952. Its totient is φ = 48960.

The previous prime is 122477. The next prime is 122489. The reversal of 122480 is 84221.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686 + ... + 845.

2122480 is an apocalyptic number.

122480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122480 is an abundant number, since it is smaller than the sum of its proper divisors (162472).

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

122480 is a wasteful number, since it uses less digits than its factorization.

122480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 122480 is about 349.9714274052. The cubic root of 122480 is about 49.6617164463.

The spelling of 122480 in words is "one hundred twenty-two thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1531 3062 6124 7655 12248 15310 24496 30620 61240 122480