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13445136 = 243331123
BaseRepresentation
bin110011010010…
…100000010000
3221022002021000
4303102200100
511420221021
61200102000
7222165435
oct63224020
927262230
1013445136
117653591
124604900
132a29a03
141addb8c
1512a8b26
hexcd2810

13445136 has 40 divisors (see below), whose sum is σ = 38593760. Its totient is φ = 4481568.

The previous prime is 13445119. The next prime is 13445137. The reversal of 13445136 is 63154431.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13445137) 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, 15130 + ... + 15993.

It is an arithmetic number, because the mean of its divisors is an integer number (964844).

Almost surely, 213445136 is an apocalyptic number.

13445136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13445136 is an abundant number, since it is smaller than the sum of its proper divisors (25148624).

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

13445136 is a wasteful number, since it uses less digits than its factorization.

13445136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31140 (or 31128 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 13445136 is about 3666.7609684843. The cubic root of 13445136 is about 237.7871599511.

Adding to 13445136 its reverse (63154431), we get a palindrome (76599567).

The spelling of 13445136 in words is "thirteen million, four hundred forty-five thousand, one hundred thirty-six".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 31123 62246 93369 124492 186738 248984 280107 373476 497968 560214 746952 840321 1120428 1493904 1680642 2240856 3361284 4481712 6722568 13445136