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13989456 = 2433134753
BaseRepresentation
bin110101010111…
…011001010000
3222022201221000
4311113121100
512040130311
61215502000
7226623405
oct65273120
928281830
1013989456
117995538
124827900
132b8a6b0
141c022ac
151365056
hexd57650

13989456 has 160 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 4133376.

The previous prime is 13989449. The next prime is 13989457. The reversal of 13989456 is 65498931.

It is a happy number.

13989456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13989457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263926 + ... + 263978.

It is an arithmetic number, because the mean of its divisors is an integer number (281232).

Almost surely, 213989456 is an apocalyptic number.

13989456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13989456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22498560).

13989456 is an abundant number, since it is smaller than the sum of its proper divisors (31007664).

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

13989456 is a wasteful number, since it uses less digits than its factorization.

13989456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 118 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 13989456 is about 3740.2481201118. The cubic root of 13989456 is about 240.9537051736.

The spelling of 13989456 in words is "thirteen million, nine hundred eighty-nine thousand, four hundred fifty-six".