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38870225 = 522336673
BaseRepresentation
bin1001010001000…
…1110011010001
32201010210220222
42110101303101
534422321400
63505042425
7651251162
oct224216321
981123828
1038870225
111aa39859
1211026415
13808c544
14523b769
15362c185
hex2511cd1

38870225 has 12 divisors (see below), whose sum is σ = 48413196. Its totient is φ = 30958080.

The previous prime is 38870201. The next prime is 38870233. The reversal of 38870225 is 52207883.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 12327121 + 26543104 = 3511^2 + 5152^2 .

It is not a de Polignac number, because 38870225 - 28 = 38869969 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2489 + ... + 9161.

It is an arithmetic number, because the mean of its divisors is an integer number (4034433).

Almost surely, 238870225 is an apocalyptic number.

It is an amenable number.

38870225 is a deficient number, since it is larger than the sum of its proper divisors (9542971).

38870225 is a wasteful number, since it uses less digits than its factorization.

38870225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6916 (or 6911 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 38870225 is about 6234.5990247970. The cubic root of 38870225 is about 338.7445771929.

The spelling of 38870225 in words is "thirty-eight million, eight hundred seventy thousand, two hundred twenty-five".

Divisors: 1 5 25 233 1165 5825 6673 33365 166825 1554809 7774045 38870225