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38707997 = 1719119839
BaseRepresentation
bin1001001110101…
…0001100011101
32200211120101112
42103222030131
534402123442
63501351405
7650004206
oct223521435
980746345
1038707997
111a938989
1210b68565
138033753
1451d85ad
1535e9082
hex24ea31d

38707997 has 8 divisors (see below), whose sum is σ = 43142400. Its totient is φ = 34513344.

The previous prime is 38707987. The next prime is 38708023. The reversal of 38707997 is 79970783.

38707997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38707997 - 28 = 38707741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38707987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59597 + ... + 60242.

It is an arithmetic number, because the mean of its divisors is an integer number (5392800).

Almost surely, 238707997 is an apocalyptic number.

It is an amenable number.

38707997 is a deficient number, since it is larger than the sum of its proper divisors (4434403).

38707997 is a wasteful number, since it uses less digits than its factorization.

38707997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119875.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 38707997 is about 6221.5751221053. The cubic root of 38707997 is about 338.2726608399.

The spelling of 38707997 in words is "thirty-eight million, seven hundred seven thousand, nine hundred ninety-seven".

Divisors: 1 17 19 323 119839 2037263 2276941 38707997