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13214988 = 223440787
BaseRepresentation
bin110010011010…
…010100001100
3220212101120000
4302122110030
511340334423
61151124300
7220216443
oct62322414
926771500
1013214988
117506686
124513690
132979027
141a7dd5a
151260843
hexc9a50c

13214988 has 30 divisors (see below), whose sum is σ = 34547436. Its totient is φ = 4404888.

The previous prime is 13214983. The next prime is 13215029. The reversal of 13214988 is 88941231.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13214983) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20070 + ... + 20717.

Almost surely, 213214988 is an apocalyptic number.

13214988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13214988 is an abundant number, since it is smaller than the sum of its proper divisors (21332448).

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

13214988 is a wasteful number, since it uses less digits than its factorization.

13214988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40803 (or 40792 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 13214988 is about 3635.2424953502. The cubic root of 13214988 is about 236.4225647764.

The spelling of 13214988 in words is "thirteen million, two hundred fourteen thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 40787 81574 122361 163148 244722 367083 489444 734166 1101249 1468332 2202498 3303747 4404996 6607494 13214988