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12553492 = 22723101193
BaseRepresentation
bin101111111000…
…110100010100
3212121210011011
4233320310110
511203202432
61125022004
7211463050
oct57706424
925553134
1012553492
1170a4696
124254904
1327a6c03
14194ac60
15117e847
hexbf8d14

12553492 has 48 divisors (see below), whose sum is σ = 26595072. Its totient is φ = 5068800.

The previous prime is 12553487. The next prime is 12553493. The reversal of 12553492 is 29435521.

It is a super-2 number, since 2×125534922 = 315180322788128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64948 + ... + 65140.

It is an arithmetic number, because the mean of its divisors is an integer number (554064).

Almost surely, 212553492 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 12553492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13297536).

12553492 is an abundant number, since it is smaller than the sum of its proper divisors (14041580).

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

12553492 is a wasteful number, since it uses less digits than its factorization.

12553492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 326 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 12553492 is about 3543.0907411468. The cubic root of 12553492 is about 232.4100210652.

The spelling of 12553492 in words is "twelve million, five hundred fifty-three thousand, four hundred ninety-two".

Divisors: 1 2 4 7 14 23 28 46 92 101 161 193 202 322 386 404 644 707 772 1351 1414 2323 2702 2828 4439 4646 5404 8878 9292 16261 17756 19493 31073 32522 38986 62146 65044 77972 124292 136451 272902 448339 545804 896678 1793356 3138373 6276746 12553492