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38432897 = 53725149
BaseRepresentation
bin1001001010011…
…1000010000001
32200022121000122
42102213002001
534314323042
63451430025
7644450156
oct222470201
980277018
1038432897
111a770228
1210a55315
137c68479
14516622d
1535927d2
hex24a7081

38432897 has 4 divisors (see below), whose sum is σ = 39158100. Its totient is φ = 37707696.

The previous prime is 38432881. The next prime is 38432909. The reversal of 38432897 is 79823483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79823483 = 174695499.

It can be written as a sum of positive squares in 2 ways, for example, as 20421361 + 18011536 = 4519^2 + 4244^2 .

It is a cyclic number.

It is not a de Polignac number, because 38432897 - 24 = 38432881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38432827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362522 + ... + 362627.

It is an arithmetic number, because the mean of its divisors is an integer number (9789525).

Almost surely, 238432897 is an apocalyptic number.

It is an amenable number.

38432897 is a deficient number, since it is larger than the sum of its proper divisors (725203).

38432897 is an equidigital number, since it uses as much as digits as its factorization.

38432897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725202.

The product of its digits is 290304, while the sum is 44.

The square root of 38432897 is about 6199.4271509552. The cubic root of 38432897 is about 337.4693803040.

The spelling of 38432897 in words is "thirty-eight million, four hundred thirty-two thousand, eight hundred ninety-seven".

Divisors: 1 53 725149 38432897