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123038988 = 22321414789
BaseRepresentation
bin1110101010101…
…10110100001100
322120112000202120
413111112310030
5222444221423
620113052540
73022546152
oct725266414
9276460676
10123038988
11634a8016
1235257150
131c64c247
14124ab3d2
15ac05ee3
hex7556d0c

123038988 has 24 divisors (see below), whose sum is σ = 287285040. Its totient is φ = 40985280.

The previous prime is 123038987. The next prime is 123039011. The reversal of 123038988 is 889830321.

It is not an unprimeable number, because it can be changed into a prime (123038987) 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, 23298 + ... + 28086.

It is an arithmetic number, because the mean of its divisors is an integer number (11970210).

Almost surely, 2123038988 is an apocalyptic number.

It is an amenable number.

123038988 is an abundant number, since it is smaller than the sum of its proper divisors (164246052).

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

123038988 is a wasteful number, since it uses less digits than its factorization.

123038988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937 (or 6935 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 123038988 is about 11092.2940819291. The cubic root of 123038988 is about 497.3715237719.

The spelling of 123038988 in words is "one hundred twenty-three million, thirty-eight thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 2141 4282 4789 6423 8564 9578 12846 14367 19156 25692 28734 57468 10253249 20506498 30759747 41012996 61519494 123038988