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38870986 = 2711252409
BaseRepresentation
bin1001010001000…
…1111111001010
32201010211222011
42110101333022
534422332421
63505050134
7651253330
oct224217712
981124864
1038870986
111aa3a390
121102694a
13808c9ab
14523bb50
15362c4e1
hex2511fca

38870986 has 16 divisors (see below), whose sum is σ = 72694080. Its totient is φ = 15144480.

The previous prime is 38870977. The next prime is 38870987. The reversal of 38870986 is 68907883.

It is a happy number.

38870986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×388709862 = 3021907105224392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38870987) 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, 126051 + ... + 126358.

It is an arithmetic number, because the mean of its divisors is an integer number (4543380).

Almost surely, 238870986 is an apocalyptic number.

38870986 is a deficient number, since it is larger than the sum of its proper divisors (33823094).

38870986 is a wasteful number, since it uses less digits than its factorization.

38870986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252429.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 38870986 is about 6234.6600548867. The cubic root of 38870986 is about 338.7467878219.

The spelling of 38870986 in words is "thirty-eight million, eight hundred seventy thousand, nine hundred eighty-six".

Divisors: 1 2 7 11 14 22 77 154 252409 504818 1766863 2776499 3533726 5552998 19435493 38870986