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38970481 = 113542771
BaseRepresentation
bin1001010010101…
…0010001110001
32201022220110011
42110222101301
534434023411
63511134521
7652146364
oct224522161
981286404
1038970481
111aaa8110
1211074441
1380c6074
1452660db
15364bc21
hex252a471

38970481 has 4 divisors (see below), whose sum is σ = 42513264. Its totient is φ = 35427700.

The previous prime is 38970479. The next prime is 38970493. The reversal of 38970481 is 18407983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18407983 = 111673453.

It is not a de Polignac number, because 38970481 - 21 = 38970479 is a prime.

It is a super-2 number, since 2×389704812 = 3037396778742722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38970401) 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 3 ways as a sum of consecutive naturals, for example, 1771375 + ... + 1771396.

It is an arithmetic number, because the mean of its divisors is an integer number (10628316).

Almost surely, 238970481 is an apocalyptic number.

It is an amenable number.

38970481 is a deficient number, since it is larger than the sum of its proper divisors (3542783).

38970481 is a wasteful number, since it uses less digits than its factorization.

38970481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542782.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 38970481 is about 6242.6341395280. The cubic root of 38970481 is about 339.0355627308.

The spelling of 38970481 in words is "thirty-eight million, nine hundred seventy thousand, four hundred eighty-one".

Divisors: 1 11 3542771 38970481