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20455344 = 24327213223
BaseRepresentation
bin100111000000…
…1111110110000
31102111020110100
41032001332300
520214032334
62010232400
7335603400
oct116017660
942436410
1020455344
1110601448
126a25700
134312770
142a06800
151be0c99
hex1381fb0

20455344 has 180 divisors, whose sum is σ = 72037056. Its totient is φ = 5370624.

The previous prime is 20455327. The next prime is 20455361. The reversal of 20455344 is 44355402.

It is an interprime number because it is at equal distance from previous prime (20455327) and next prime (20455361).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 91617 + ... + 91839.

Almost surely, 220455344 is an apocalyptic number.

20455344 is a gapful number since it is divisible by the number (24) 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 20455344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36018528).

20455344 is an abundant number, since it is smaller than the sum of its proper divisors (51581712).

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

20455344 is a wasteful number, since it uses less digits than its factorization.

20455344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 20455344 is about 4522.7584503265. The cubic root of 20455344 is about 273.4863126724.

The spelling of 20455344 in words is "twenty million, four hundred fifty-five thousand, three hundred forty-four".