Search a number
-
+
38980491 = 31171127131
BaseRepresentation
bin1001010010110…
…0101110001011
32201100102011220
42110230232023
534434333431
63511253123
7652220514
oct224545613
981312156
1038980491
1120004690
121107a1a3
1380ca7a4
145269a0b
15364eb96
hex252cb8b

38980491 has 32 divisors (see below), whose sum is σ = 58392576. Its totient is φ = 22932000.

The previous prime is 38980481. The next prime is 38980511. The reversal of 38980491 is 19408983.

38980491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38980491 - 219 = 38456203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38980411) 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 31 ways as a sum of consecutive naturals, for example, 297496 + ... + 297626.

It is an arithmetic number, because the mean of its divisors is an integer number (1824768).

Almost surely, 238980491 is an apocalyptic number.

38980491 is a deficient number, since it is larger than the sum of its proper divisors (19412085).

38980491 is a wasteful number, since it uses less digits than its factorization.

38980491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 38980491 is about 6243.4358329369. The cubic root of 38980491 is about 339.0645885931.

The spelling of 38980491 in words is "thirty-eight million, nine hundred eighty thousand, four hundred ninety-one".

Divisors: 1 3 11 33 71 127 131 213 381 393 781 1397 1441 2343 4191 4323 9017 9301 16637 27051 27903 49911 99187 102311 183007 297561 306933 549021 1181227 3543681 12993497 38980491