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38841940 = 22517234967
BaseRepresentation
bin1001010000101…
…0111001010100
32201002101010101
42110022321110
534420420230
63504303444
7651102544
oct224127124
981071111
1038841940
111aa1a585
1211011b84
13807c6c7
145231324
153623aca
hex250ae54

38841940 has 48 divisors (see below), whose sum is σ = 90139392. Its totient is φ = 13984256.

The previous prime is 38841937. The next prime is 38841949. The reversal of 38841940 is 4914883.

It is a self number, because there is not a number n which added to its sum of digits gives 38841940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38841949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5337 + ... + 10303.

It is an arithmetic number, because the mean of its divisors is an integer number (1877904).

Almost surely, 238841940 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 38841940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45069696).

38841940 is an abundant number, since it is smaller than the sum of its proper divisors (51297452).

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

38841940 is a wasteful number, since it uses less digits than its factorization.

38841940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016 (or 5014 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 38841940 is about 6232.3302223165. The cubic root of 38841940 is about 338.6623916180.

The spelling of 38841940 in words is "thirty-eight million, eight hundred forty-one thousand, nine hundred forty".