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38802505 = 571139811
BaseRepresentation
bin1001010000000…
…1010001001001
32201000101000211
42110001101021
534413140010
63503401121
7650546560
oct224012111
981011024
1038802505
111a9a2995
1210bb31a1
138067781
145220bd7
15361708a
hex2501449

38802505 has 16 divisors (see below), whose sum is σ = 53691264. Its totient is φ = 26369280.

The previous prime is 38802497. The next prime is 38802553. The reversal of 38802505 is 50520883.

It is not a de Polignac number, because 38802505 - 23 = 38802497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951 + ... + 8860.

It is an arithmetic number, because the mean of its divisors is an integer number (3355704).

Almost surely, 238802505 is an apocalyptic number.

38802505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38802505 is a deficient number, since it is larger than the sum of its proper divisors (14888759).

38802505 is a wasteful number, since it uses less digits than its factorization.

38802505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9936.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 38802505 is about 6229.1656744704. The cubic root of 38802505 is about 338.5477417177.

The spelling of 38802505 in words is "thirty-eight million, eight hundred two thousand, five hundred five".

Divisors: 1 5 7 35 113 565 791 3955 9811 49055 68677 343385 1108643 5543215 7760501 38802505