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38967481 = 75566783
BaseRepresentation
bin1001010010100…
…1100010111001
32201022202100001
42110221202321
534433424411
63511113001
7652134550
oct224514271
981282301
1038967481
111aaa5933
1211072761
1380c48a7
145264d97
15364adc1
hex25298b9

38967481 has 4 divisors (see below), whose sum is σ = 44534272. Its totient is φ = 33400692.

The previous prime is 38967457. The next prime is 38967541. The reversal of 38967481 is 18476983.

It is a happy number.

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: 18476983 = 72639569.

It is a cyclic number.

It is not a de Polignac number, because 38967481 - 27 = 38967353 is a prime.

It is a super-2 number, since 2×389674812 = 3036929150970722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38967431) 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, 2783385 + ... + 2783398.

It is an arithmetic number, because the mean of its divisors is an integer number (11133568).

Almost surely, 238967481 is an apocalyptic number.

It is an amenable number.

38967481 is a deficient number, since it is larger than the sum of its proper divisors (5566791).

38967481 is an equidigital number, since it uses as much as digits as its factorization.

38967481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5566790.

The product of its digits is 290304, while the sum is 46.

The square root of 38967481 is about 6242.3938517207. The cubic root of 38967481 is about 339.0268627031.

The spelling of 38967481 in words is "thirty-eight million, nine hundred sixty-seven thousand, four hundred eighty-one".

Divisors: 1 7 5566783 38967481