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122980144 = 2471098037
BaseRepresentation
bin1110101010010…
…00011100110000
322120102001001011
413111020130300
5222440331034
620111520304
73022212460
oct725103460
9276361034
10122980144
1163467891
1235229094
131c62b521
1412493ba0
15abe3864
hex7548730

122980144 has 20 divisors (see below), whose sum is σ = 272313424. Its totient is φ = 52705728.

The previous prime is 122980139. The next prime is 122980147. The reversal of 122980144 is 441089221.

It is not an unprimeable number, because it can be changed into a prime (122980147) 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, 548907 + ... + 549130.

Almost surely, 2122980144 is an apocalyptic number.

122980144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

122980144 is an abundant number, since it is smaller than the sum of its proper divisors (149333280).

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

122980144 is a wasteful number, since it uses less digits than its factorization.

122980144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098052 (or 1098046 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 122980144 is about 11089.6412926659. The cubic root of 122980144 is about 497.2922210040.

The spelling of 122980144 in words is "one hundred twenty-two million, nine hundred eighty thousand, one hundred forty-four".

Divisors: 1 2 4 7 8 14 16 28 56 112 1098037 2196074 4392148 7686259 8784296 15372518 17568592 30745036 61490072 122980144